You need to find out what smell dogs don't like. What smells do dogs dislike? Why do dogs have a strong sense of smell?
Insidious spies and valiant border guards, smugglers and customs officers, criminal elements and selfless detectives... All those who, due to their line of work, have to evade wanted shepherd dogs from time to time or, conversely, carry out pursuit, can easily answer the question posed. Most of our readers are unlikely to have to throw bloodhounds off their scent in everyday life, but it’s still useful to know what smell dogs don’t like – for example, to protect the legs of furniture from a toothy pet.
Natural smells
Pepper is the most potent remedy, and the hotter it is, the more effective. But! It should be used with caution, especially when it comes to affecting a puppy or a hunting dog with a delicate sense of smell. With the help of ground cayenne (red) pepper, scattered around the perimeter of the flowerbed, you can drive away stray dogs who have gotten into the habit of marking phloxes and dahlias dear to your heart. The dose is very approximate; usually a sachet is enough for an average-sized front garden.
The disadvantage of this remedy is that the stinging dust will get into the nose not only of the four-legged animals, but also of the gardener himself if he intends to cut or simply smell the flower. In addition, after each rain, the “security perimeter” will have to be renewed. Although, if the visits are made by the same watchdogs, after one or two visits they will develop a persistent negative reflex, and all interest in the flowerbed will disappear.
The hot seasoning can be used not only in powder form, but also by crushing the whole pod. The pieces are scattered in “forbidden” places (along the same flower beds or beds) or, in an apartment, placed in gauze bags and laid out where dog visits are undesirable. If the puppy shows increased interest in the owner’s shoes, then you can rub them with a fresh pod of hot pepper; One “tasting” is usually enough for the dog to avoid the “evil” shoes.
Note: during the period of changing teeth, the puppy must have special objects that he is allowed to chew, otherwise the bite will not form correctly. In addition, sooner or later the cub will not be able to withstand the itching in the gums and will chew something, regardless of any odors.
Another way to use pepper is in the form of a decoction. Take one teaspoon of red (if not available, then black) pepper per glass of water and bring to a boil. To enhance the effect, you can add tobacco. The advantages are the absence of stinging dust and, if plants are treated, the concomitant destruction of pests such as aphids, scale insects and other phytophages.
Shag... Judging by films and books, all fugitives, without exception, use it, throwing the pursuit off the scent. And this is not fiction. The self-prying eye (tobacco shaken out of a cigarette can completely replace it), capable of stopping specially trained animals, also works on ordinary balls and bugs - it will scare them away from a country fence, for example. Tobacco is used both in dry form and in infusions, pure or mixed with other components.
Most dogs don't like the smell of citrus fruits. Lemon slices are laid out raw or rubbed on objects protected from puppy teeth. Orange and especially tangerine have a much weaker effect, and some pets even consider them a treat. Another option is citrus oil, which you can buy at the pharmacy.
Hellebore, a tall plant with large leaves, is not called “volcogon” for nothing. This is a little-known remedy, used mainly by taiga residents. To prevent dogs from carrying out an “inventory” of food supplies in the absence of their owners, it is enough to place several stalks of hellebore at the entrance to the tent or in the backpacks themselves. Caution: the plant is poisonous!
The smell of a large predator! Dogs definitely don't like it. It is difficult to apply this information in everyday life, although... perhaps in the near future it will not be so difficult to synthesize the smell of a bear or a lion. Considering that an animal’s sense of smell is 60-100 times sharper than ours, high concentrations are not needed.
Artificial fragrances and household chemicals
Dogs dislike all odors emitted by chemicals to one degree or another. If you walk with your pet in the park, you will notice that he diligently avoids the freshly bleached trees. And it won’t go well with old whitewash, unless there’s no choice. Lime is unlikely to be useful as an effective repeller, because dogs living near homes are accustomed to it. Bleach is a different matter, but people won’t like its pungent smell either.
Calcium carbide (welding carbide). It smells in any condition, but at the moment of contact with water it will provide a real “gas attack”. It is not poisonous, but leaving it unattended, especially where there are children, is highly discouraged. When reacting, it releases alkali and can harm plants or damage flooring.
Perfumes, primarily strong-smelling colognes. An air freshener, especially one with a citrus scent, will likely make your pet scurry out of the room. However, if the owners intensively use perfume, the dog will not pay attention to it (this does not mean that it likes the smell, the animal has just gotten used to it).
It's worth trying a few products - some dogs won't like the smell of deodorant, while others will avoid objects soaked in mouthwash. As with people, an individual approach to animals pays off.
Volatile organic compounds, VOCs - all without exception and in any concentration. Most of them are poisonous, and the dog instinctively senses danger. VOCs contain gasoline, alcohol, toluene, solvents and cleaning agents, ethers, paints and varnishes and many other liquids, gels and aerosols, both industrial and household.
Of the above, the easiest way is to use vinegar or alcohol - ethyl or isopropyl. Moisten cotton swabs and place fragrant “surprises” where required. The disadvantage is that both vinegar and alcohol evaporate quickly. But naphthalene, on the contrary, has a persistent odor; mothballs will repel not only moths, but also some larger ones.
Industrial dog repellers
It is best to flee from an aggressive flock without delay. But one or two animals can be stopped by using pepper spray. Other products are also produced that repel dogs using smell - with the eloquent names “Chew? No!” “Antigadin”, GettOFF my garden (“Get out of my garden!”) and the like.
Protect your sense of smell and nervous system
There is absolutely no need for a deterrent smell where dogs are trained: the animal must be in a balanced state in order to fully concentrate on following commands. Olfactory stimuli are stronger for the canine family than auditory and even visual ones, therefore, during the learning process, places and objects with strong odors should be avoided. The same applies to the smell of the eternal canine “antipodes” – cats: you shouldn’t smell of them.
Dogs have a negative attitude towards the smell of metal - an enclosure for animals should be made with as little metal structures as possible, an iron roof is especially undesirable. The dog will not show his anxiety, but will experience a persistent depressed state.
Note: any smell (or combination thereof) to which a negative reflex has been developed can become unpleasant for a dog. Let’s say that if an animal was once kicked by a horse, then during a walk the dog will pull the owner away not only from the stables, but also from horse manure.
Your pet perceives the world of smells very subtly - and this knowledge will help you customize your interaction with it: it is relatively easy to bypass many problems in raising a puppy, and then even teach the dog the basics of detective work on your own.
Of all the senses, the dog has the best developed sense of smell. Scent is undoubtedly the most important of the sensations practically used by a dog; it is the main sense by which it learns about the world and is guided in life.
Unlike humans, a dog's brain is wired to process olfactory rather than visual information, which makes it extremely difficult for us to understand. Try to imagine a world created not from images, but from millions of smells of varying intensity! The dog's sense of smell is so superior to humans that we can hardly even try to appreciate its extraordinary ability to distinguish thousands of different odors, and not only to clearly distinguish them, but also to do this at extremely low concentrations.
Puppies are born blind and deaf, but with an excellent sense of smell, which in the first days helps them navigate the world around them.
In both humans and dogs, the olfactory center of the brain is responsible for the perception and processing of information about the received smell coming from the olfactory receptor cells.
Unlike humans, a dog actively collects odor information, using the special functions of the olfactory organs.
A dog’s brain is 10 times smaller in size than a human’s, while the part of the brain responsible for smell is 40 times larger than the olfactory lobe of our brain, and the ability to identify odors is 1000-10000 times higher.
First, dogs have movable nostrils, which helps them determine the direction of a scent. Secondly, they know how to sniff - this is a special function that is very different from normal breathing. Sniffing is a surprising disruption of the normal respiratory process, consisting of 1-3 consecutive repetitions of respiratory movements, each of which contains from 3 to 7 intense intakes of air. The most sensitive part of a dog's nose, the septal organ, is likely responsible for initiating this process.
The thickness of the olfactory epithelium of a dog is 0.1 mm, and in humans it is only 0.006 mm; The dog's olfactory bulbs are also much larger, their total weight is approximately 60 g, which is 4 times more than that of a human.
During normal breathing, air flows freely through the nasal passages and down to the lungs. When sniffing, the inhaled air with odor molecules passes through the bony structures of the nasal cavity, called the subethmoidal (subethmoidal) protrusion (humans do not have them), and then enters the inner surface of the nasal membranes. The sublatticed projection blocks inhaled air, preventing it from being “washed out” during exhalation, allowing odor-carrying molecules to accumulate.
An average-sized dog produces approximately 450 ml of mucus per day.
Everyone knows that a dog's nose is usually moist and cool. Moisture on the nose is produced by many mucous glands located in the nasal cavity. Nasal mucus is needed not only to cool the nose, its main function is to capture, dissolve and accumulate odor molecules from the air and promote the “odor solution” to the receptor cells densely packed on the olfactory epithelium of the inner surface of the nose. For the normal functioning of this transport system, a large amount of mucus is required. If there is not enough mucus produced, the dog licks the nose; if there is too much mucus, the “extra” mucus flows out from the lips, forming hanging “drool” in some bristly breeds.
1- brain cavity; 2- olfactory cavity; 3- nasal cavity
An extremely complex system of bends of the maxillonasal turbine bones, which look like labyrinthine shells with thin bone scrolls covered with olfactory epithelium containing receptor cells and nerve endings, is designed to create a flow of air that brings odors to the area of the olfactory receptors, where chemical Signals from odors are converted into electrical signals and transmitted to the olfactory center of the brain.
In humans, the total area of the olfactory cells is about 7 cm2 (about the area of a postage stamp). In a dog, this area can occupy up to 390 square cm (a sheet of writing paper). The size of the area varies depending on the size and length of the dog's nose: dogs with a wide, long muzzle have more olfactory receptors and therefore a higher ability to identify odors than breeds with a narrow, short muzzle.
Nature has provided something else to ensure the dog's exceptional sense of smell. Distinction and recognition of odors occurs not only in the nasal region. In the dog's mouth, on the palate, immediately behind the incisors, there is a special formation - the so-called vomeronasal, or vomeronasal organ. It is a small oblong tubercle lined with receptor cells and communicating with both the mouth and nose. This is the biggest mystery of the dog's nose; its true purpose is still unknown. It is believed that this organ performs one of the functions in the emotional behavior of dogs by detecting pheromones - odorous chemicals secreted by animals and, as a rule, poorly or not perceived by humans. This odor information is transmitted by the vomeronasal organ directly to the limbic system - the oldest center of the brain, which evolved long before the centers of vision and hearing, and is responsible for emotions, spatial and factual memory, as well as for all basic types of animal behavior: feeding, sexual, territorial, social .
The nose of a dachshund has approximately 125 million odor receptors, a fox terrier has 145 million, and a German shepherd has 225 million. Tracking hounds have noses designed to accommodate as many scent receptors as possible in the space allotted to them - even if the dog itself is small. The extremely scent-oriented Beagle, who weighs approximately 14 kg and stands no more than 38 cm tall, has the same number of olfactory receptors - 225 million - as the German Shepherd, which is twice the Beagle's size and weight! Well, the champion of scent among dogs - the bloodhound - has 300 million receptors. The human nose boasts only 5 million receptors, which is about 2% of the number of biglins.
Pheromones serve to transmit “personal” information about an animal to other individuals (usually of the same species). By applying the scent of its body to surrounding objects (by rubbing itself on the ground or tree trunks or leaving scent marks of urine and feces) or by reading other people's marks, the dog notifies or receives information about the gender, age, health, sexual state, even emotional status of other members of the group. For example, aggression, fear, excitement, and the degree of saturation are accompanied in animals and humans by a change in the usual body odor. When frightened and aggressive, a dog often secretes the contents of the odorous anal glands and thus signals its condition by smell. When meeting, dogs carefully sniff each other, first examining with their noses those places where there are scent glands. Even dogs living in the same house constantly sniff each other to get the latest news about the well-being and condition of the household. By catching the smell of pheromones, the dog can prepare for social contacts with fellow tribesmen and determine the nature of further relationships and the line of behavior: peaceful or hostile.
The dog is able to sense and identify such a faint odor that even the most sensitive devices cannot register. It's hard for humans to imagine how much more sensitive dogs' noses are to certain smells. They are particularly attuned to animal odors, which is understandable, considering that the dog is a predator, and its nose originally served it for hunting.
For example, dogs can smell a drop of blood in five liters of water. Dogs can smell butyric acid, the odorous component of human sweat, at concentrations a million times below our threshold of sensitivity. Dogs can follow human tracks even if those tracks were left many hours ago or covered with strong-smelling substances, even if the person is wearing rubber boots or riding a bicycle. A dog can smell a smell of strong physiological significance (for example, hunting dogs - the smell of game) at a distance of 1 km.
The dog is able to remember smells and associate its olfactory sensations with a variety of past experiences. The memory for smells lasts throughout the dog's life.
A dog differs from a human not only in its acute sense of smell, but also in its amazing ability to process odor information.
A dog’s sense of smell is analytical; it is able to perceive and simultaneously subdivide many different odors, as if “stratifying” them - just as we are able to distinguish individual objects and details in the general visual picture of the surrounding world. Imagine walking into a kitchen where a meat stew is being prepared. You will definitely smell the meat and spices. Your dog will not only distinguish all the “layers” of this “smell mixture” - potatoes, carrots, tomatoes, onions, beans and each spice separately, but will also easily identify the smells of pork, beef, lamb, rabbit, which, in our opinion, they smell almost the same.
The dog's ability to sense and identify odors, as well as navigate using a sense of smell that is especially finely tuned to biological odors and pheromones, has given humans the opportunity to use them for a variety of purposes - from hunting game to searching for criminals or searching and rescuing people under the rubble of buildings or in snow avalanches, where a dog finds a person under many meters of stone or snow. Among the most famous service “professions” of dogs is the search for drugs, weapons, explosives and flammable substances, gas leaks, and prohibited food products.
For a dog, footprints are as material as photographs that capture moments of the past are for us. By the scent of the trail, the dog can determine who exactly passed, in what direction and for how long ago. Search abilities manifest themselves differently in dogs of different breeds. Some breeds - such as beagles and bloodhounds - are good at picking up tracks on the ground (i.e. using their lower senses). Dogs of these breeds usually slowly and carefully sniff the ground along which the track was laid, follow the chain of tracks left, literally moving from one track to another. This is the so-called “tracking” (from the English track - to follow the trail). A dog working in this way best takes a relatively fresh trail, on which it easily picks up the smallest particles of odor emitted by the pursued through the pores of its body and left by it along its path; in addition, the smells of trampled grass and earth most likely help it keep the trail. However, more often the dog uses a different method: it does not follow the tracks itself, but follows the smell of microscopic particles of organic substances (skin epithelium, hair, saliva, sweat), continuously “dropped” by a person or animal. Since these particles, falling before settling on the ground, are picked up and carried in different directions by air currents, the dog can walk parallel to the track, sometimes at a considerable distance from it. This method is called “trailing” (from the English trail - to reach behind, in the form of a cloud, a train). The already mentioned Bloodhounds are the best trailers in the world, they have an excellent memory for smells, and they can follow a scent all day long without the stimulation of “smell memory” - additional sniffing of an object belonging to the object of the search.
Studying the smell, the dog usually begins to energetically, deeply and rapidly draw in air, flares its nostrils, lowers, or less often raises its muzzle. On the street, she often turns her body or head against the wind. Rapid lateral tilts of the head are also characteristic, allowing one to detect the slightest fluctuations in air flow. Sometimes a dog, attracted by some smell, covers or completely closes its eyes. This means that she sensed something extremely pleasant or interesting for herself.
An alternative method of search work is by top instinct, i.e. by the smell left in the air. Dogs that take a scent in the air, in search of a scent dissolved in the air, run with their heads raised around the examined area, moving in different directions, spinning in place and ever expanding circles, and as soon as they catch the scent, they run straight towards its source. This method is most successfully used in search and rescue operations, in disaster areas, especially during building collapses, when it is necessary to determine the presence of a person as quickly as possible, and not to follow exactly in his footsteps. Generally, search and rescue teams prefer to work with German Shepherds, Collies, and Labrador Retrievers. They are trained to distinguish odors that are a “mixture” of the odors of many people of different ages and genders. There are dogs specially trained to search for dead bodies. They are able to detect bodies buried in the ground or under water.
A dog's great genetic design already has room for a remarkable olfactory system, but even this can be improved through breeding and training. Sensitivity to odors is partly inherited. An excellent example of enhancing innate abilities through selection is the beagle, basset and bloodhound. These breeds were bred specifically for hunting and are now recognized experts not only in identifying and distinguishing the smells of game and animals, but also in their special passion for searching and studying tracks, and hounds have no equal in their ability to follow the scent.
The “beagle crews” sniffing out illegal agricultural products at American airports are an excellent example of the ability to develop the exceptional abilities of beagles through training. The training technique is brilliantly simple. The training begins with citrus fruits, teaching the beagle to identify an orange by sitting down to eat sausages on command. First, the dog is taught to sit like a million other dogs in obedience training, using sausages as a food reinforcer. The odor of orange is then introduced and this odor replaces the audio command. Beagles are very curious by nature and love to explore everything with their nose. The instructor places an orange in a cardboard box and moves it around. The beagle explores the box, intensively sniffing it, all the cracks and open areas of the box. After a period of sniffing, the trainer can be sure that the dog has remembered the smell of the orange. At this stage, the command “sit” is given. When the dog sits, he is rewarded for following this command with a piece of sausage. This process is repeated several times, and there comes a time when the dog sniffs the box, and if he detects the smell of orange inside, he sits down. Classic method.
Another profession that dogs have been trained to do is arson detection. Dogs are trained to detect the presence of flammable liquids (gasoline, solvents, etc.) that could be used to deliberately set fires. It has been established that a dog can smell flammable liquids even 18 days after a fire has been extinguished, while electronic detectors must be activated immediately to obtain reliable data, when the fire has not yet been completely extinguished and the building is dangerous to enter. Most often, black Labradors are used on fires. In the USA, many insurance companies have their own Labradors; about 50 dogs of this breed are on the staff of the Federal Bureau of Alcohol, Tobacco, Firearms and Explosives.
In Europe and the USA, dogs have long been used to inspect gas pipelines to find gas leaks. It only takes 1-2 days for a dog trained in any type of search work to learn to smell buried objects treated with butyl mercaptan, a compound used to “odorize” odorless natural gas. With amazing accuracy, the dog is able to smell it at a depth of 12 meters - where the sensors of devices for detecting gas leaks are powerless!
The list of specializations of search dogs goes on. Four-legged experts show excellent results in detecting houses infested with termites - 95% versus 50% given by devices. Dogs can easily find toxic mold that is dangerous to human health in residential areas. In recent years, research has been conducted into the ability of dogs to detect cancer cells in the human body. The results of the experiments are very encouraging.
Beagle Brigade
For many years now, all passengers arriving at US international airports have been greeted by a team of cute, cheerful beagles in green and blue vests. They walk busily among travelers and poke their noses everywhere, happily accepting the attention of others and wagging their tails affably. In fact, they are on duty - they are interested in the contents of the pockets, bags and suitcases of the arrivals.
This is a beagle brigade - a special detachment of beagles and inspectors-guides created within the structure of the Veterinary and Phytosanitary Inspection Service (APHIS) of the US Department of Agriculture to inspect baggage at international airports. The brigade searches for and confiscates agricultural products prohibited for import into the country. Plants, fruits, vegetables, meat and other animal products imported by ordinary tourists without complying with veterinary control regulations (i.e., simply undeclared) can carry pathogens or plant pests that can cause significant damage to US agriculture. According to the Department, about 75,000 seizures of prohibited products are carried out annually in the country thanks to beagle teams.
APHIS works with U.S. Immigration and Customs Enforcement and the U.S. Public Health Service at every port of entry across the country, including land border crossings, international postal terminals, seaports and airports. Beagle teams typically patrol baggage claim areas at international airports. These cheerful, cute dogs in green vests are the first to greet passengers stepping off the plane.
The airport baggage screening program began in 1984 at Los Angeles International Airport. And already in 2004, more than 60 beagle teams worked at 21 airports in the country. All four-legged members of the team were either donated by private owners and breeders, or adopted from shelters. The dogs were tested for traits such as friendliness and intelligence. Those who were not selected for service ended up in “foster” families—not a single dog was returned to the shelters.
Why beagles? After all, service breeds are much more common in the role of “bloodhounds”: shepherd dogs, Rottweilers...
Firstly, because they are simply charming, sociable and friendly, and due to their small size they do not evoke feelings of fear or mistrust in people. Secondly, beagles are very interested in food and other animals - especially their smells. Originally bred to hunt rabbits, beagles have an exceptional sense of smell, capable of detecting odors so faint that they are practically inaccessible to measuring instruments. It was these qualities that influenced the decision to choose this breed for baggage screening at airports.
It turns out that beagles make not only wonderful pets, but also excellent federal agents! They help inspectors make the inspection process not only immeasurably faster and more accurate, but also objective, regardless of the passenger’s identity. The fact is that very often people violate the rules for importing plants, fruits or meat products not intentionally, but out of ignorance, they simply do not understand why a tulip bulb brought from abroad, or a lemon, or a piece of cheese, or a special a type of smoked ham. And if they start to get angry and protest against a body search or a search of their luggage, it is very convenient for the inspector to refer to the cute beagle: “I beg your pardon, sir, I am only doing what the dog shows me!”
In order to become a member of the brigade, a beagle must have some other qualities. First of all, the beagle must be extremely friendly to people - adults and children, because this is the very contingent with which he will have to work. And one more thing: the beagle must be very highly motivated by food, since it works for food (which, in principle, is expected, because beagles are known for their omnivores and insatiable appetite!).
Before starting work, beagles undergo 10 to 13 weeks of training, most often at a canine training center in El Paso, Texas. In order to select one promising candidate for study, you have to look at from 5 to 15 beagles - usually between the ages of 1 and 3 years and not necessarily purebred.
They begin training by recognizing 5 key smells: mango, apple, citrus, pork and beef. The dog is rewarded with a treat each time it discovers an item with the desired scent hidden in a cardboard box, and sits and waits quietly next to it. Gradually, as the skill is consolidated, the target is hidden in suitcases, first soft, and then hard, and all sorts of objects are added, usually packed in luggage by tourists. Then other products are added, often carried by passengers - this is how the beagle is taught not to pay attention to chocolates, cookies and other irrelevant items. The Beagle is trained to be so selective that it can distinguish the smell of fresh mango from mango shampoo.
Beagles are good students. Usually, after 2-3 days of intense training, liberally flavored with numerous pieces of treats as a reward, the dog is able to recognize the desired smell, and the rest of the course is spent honing the skill and learning to find the smell everywhere. Exactly everywhere - in suitcases with things, backpacks and wallets, bicycle tires, car trunks, bottles of baby food, cowboy hats and vases with a second bottom... Even if the item is hidden in a hermetically sealed container, you can’t fool a beagle’s nose!
After a few weeks of training, the dogs are assigned to inspectors who have also completed their training. Couples need to “work together”, and sometimes this takes quite a long time. After just 6 months of work, a beagle is able to detect prohibited products in 80% of cases; by the end of the second year, trained beagles are not mistaken in 90% of cases. Beagles' odor recognition abilities are extremely high; some can recognize up to 50 different odors.
It is interesting that beagles are usually not taught to detect wild or exotic animals, but their natural hunting instincts do not sleep, and the beagle sometimes suddenly alerts the inspector about unusual contraband. There is a well-known story about Shelby, the super beagle, who smelled live snails in sealed plastic containers hidden among things in a suitcase.
After training in the controlled, sterile environment of training classes, the beagle-inspector pair undergoes the final phase of training "in combat" - at the airport, where they must work among the noise and hubbub of thousands of rushing people and many distractions. The Beagle sniffs the luggage of all passengers without exception, regardless of whether they have declared anything or not. If a beagle smells a contraband product, he sits down next to the “guilty” luggage and waits for the inspector to approach, who will definitely treat him to something tasty! The teams train at the airport for a month, then take a final exam and, if successful, earn the right to work at one of the country's international airports. Most beagles' careers in the team last from 6 to 10 years, and after "retirement" the handlers with whom they worked in pairs for all these years usually take them into their homes. In other cases, “foster parents” are found for beagles.
1. Dogs are so interested in the tails of their companions because under the dog’s tail there is a special gland that is responsible for the individual smell. When scared, dogs tuck their tails to avoid giving themselves away.
2. Many animals have favorite smells. For dogs it is the smell of anise, for cats it is valerian and mint, and lions love good perfume. The camel is attracted to the smell of tobacco smoke.
3. When a boar is ready to become a father, aromatic substances appear in his saliva, which are captured by the female. By the way, this is why it is domestic pigs (and not dogs, which have a much more developed sense) that are so successful in finding truffles in the ground. The fact is that truffles have an aroma similar to the “love bouquet” of a boar.
4. Male frogs let the female smell their hind leg by running it around her nose. This greatly excites the female and stimulates the laying of eggs.
5. Some animals can even imitate the smell of the opposite sex. Male snakes emit female scents during mating. And while their competitors are crawling away on the wrong trail, they are calmly heading towards their chosen one.
6. Saturnia butterflies have absolutely fantastic olfactory abilities. Saturnia males can smell females at a distance of up to 11 kilometers, despite the fact that at such a distance there could be only one molecule of the odorous substance produced by the female in a cubic meter of air.
7. The sexual attractants secreted by the fox seem pleasant to humans, as they resemble the smell of violets.
8. In northern Sweden, wolf urine is used to mark roadsides to prevent collisions between cars and moose.
9. In West Germany, to keep wild animals off the roads, they began placing objects made of porous plastic impregnated with a specially synthesized “human odor” along the roads and around city outskirts. To humans, these objects smell faintly of lemon, but animals can detect the smell of butyric acid, ammonia and other components of human sweat.
10. Ants communicate using smells - their glands produce pheromones in different concentrations for different messages. When an ant dies, they communicate with it for several more days as if it were alive, until the smell of decomposition products overcomes the pheromones. If you smear a living ant with substances that contain the smell of decomposition, then it will definitely be taken to the cemetery, and will be taken again, no matter how long it comes back from there.
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Our faithful four-legged friends - dogs - perceive the world around us through their sense of smell. They distinguish and remember different odors (defined even for a long time). Of course, dogs, like humans, prefer some scents to others. Let's look at what smells dogs can't stand.
Why do dogs have a strong sense of smell?
Perhaps the main useful property that characterizes dogs is their very sensitive nose. It is able to perceive odors 400 times better than humans. There are more than 200 million cells in a dog's nose that provide the smelling function. For this reason, the noses of animals are so thin.
Some odors that seem just a little unpleasant to a person can cause discomfort and be unbearable for a dog. And they are forced to come to terms with it. Although sometimes the dog gets so irritated that it can become nervous and even aggressive. Therefore, it is very important for owners to know what odors dogs cannot tolerate.
However, four-legged friends do not immediately use their instincts. At about five months of age they begin to be tracked. However, these abilities need to be developed. A dog living outside the city masters navigation skills faster than in the city. It often happens that a dog gets lost, runs away and does not find its way home, since it does not use its sense of smell in the concrete jungle.
What smells dogs can't stand?
The main natural smells that dogs don't like are citrus fruits. This property served as the basis for a technique that will help wean a dog from an unwanted action, for example, barking. There are collars that release strong citrus scents when a strong sound vibration is detected. In order not to encounter an unpleasant odor, the dog will not bark again.
Powder or crushed red pepper, placed in a place that the dog has begun to spoil, can wean him from bad actions. By the way, if your pet is still a puppy, then the pepper should be wrapped in a piece of gauze or bandage to avoid possible burns. Do you want to eliminate your pet's habit of chewing shoes? Then rub it with hot pepper. Usually, after the first such procedure, the dog no longer shows increased interest in the boots.
What smell do dogs not like? Another educational tool for a pet can be shag. To wean your dog off a bad habit, you need to sprinkle it in the area where the animal likes to misbehave. You can also use an infusion of shag. To do this, you need to steam the tobacco in half a glass of boiling water for 45 minutes. Then soak the problem area in the house with the strained liquid.
Artificial scents that repel dogs
To the question: “What smell can dogs not tolerate?” The answer is simple - almost all synthetic odors. Even freshly bleached trees, which emit a specific smell, cause disgust. The most hated home remedy that dogs try to get away from as far as possible is bleach. The dog will also not want to deal with the similar pungent and fetid smell of welding carbide. This substance causes the “fragrant wave” to spread over tens of meters around, and when it comes into contact with water, the plume becomes simply creepy.
Pets dislike citrus and anti-smoking air fresheners so much that they leave the room.
With the help of volatile organic compounds, which cannot be avoided without alcohol, gasoline, toluene, ethers, solvents and paints, you can rid your dog of the desire to do bad things. The method is simple - moisten a cotton pad in this product and place it in the desired place.
How to preserve your sense of smell and not harm your nervous system
It is not recommended to use repellent odors in dog training areas. Animals should be in a calm, balanced mood. This way they can be completely focused on training to follow commands. Smells that are unpleasant to dogs are a stronger irritant for them than any sounds or visual moments. In addition, it should not smell like a cat.
Dogs perceive metal smell negatively, so there should be few metal structures in the enclosure. In particular, you should avoid a metal roof. In an unsuitable house, the dog will look calm outwardly, but will be in a depressed state.
On a note
It is worth paying attention to what smell dogs cannot stand, as it can traumatize their psyche. For a dog, any smell can become negative if negative associations have been developed with it. For example, if a dog is kicked by a horse, then due to the developed reflex, the pet will move away from the stable or horse manure.
When going to a house where a pet lives, it is better not to wear a strong perfume, as this can provoke a bad attitude from the dog.
Now you know what smells dogs cannot stand. Remember this, and you will be able to establish contact with your pet. Thanks to which, you can avoid the problems of education and even teach the dog to keep track yourself.
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