How many uses does a dog's nose have?

Dogs recognize themselves by smelling each other.

For dogs, the nose may be one of the most important organs in their whole body, because dogs' eyesight and sense of smell are not very good, so many times dogs rely on "smell" to judge the taste of food and find their way. It goes without saying how sensitive a dog's sense of smell is. Their sense of smell is more than 65,438+0,000 times that of human beings, so they can smell even subtle differences through their noses. It is also for this reason that dogs can do many things with their noses.

Recently, there was an interesting news. A dog owner found it interesting because he saw on the Internet that other dogs also have the ability to recognize money, so he began to train his dog how to recognize money on a whim. The training is also quite successful. No matter at home or on the street, as long as the owner's money falls, the dog will help pick it up and give it to the owner. And after long-term training, dogs are now very sensitive to the taste of money. One day, the dog became restless by the sofa at home, sniffing everywhere, but refused to leave. Because the owner felt strange, he opened the sofa cushion and found 300 yuan hidden inside. Not only that, the dog also found the hidden money in many places at home, and finally realized that the money was actually the private money hidden by her husband.

Sniffer dog

This case is not only interesting, but also shows how excellent a dog's keen sense of smell is, which is why dogs are trained to do all kinds of work. The dog's nose can distinguish about 2 million different smells, and it also has excellent discrimination ability. They can sniff out the smell they are looking for from many mixed smells. All kinds of animals have similar nose structures. There are many folds in the upper part of the nasal cavity. There is a layer of mucosa on the fold, and many olfactory cells are hidden in the mucosa. When mucus secreted by mucous membrane often wets these olfactory cells, it will dissolve odorous substance molecules in the mucus and stimulate olfactory cells. Olfactory cells immediately send signals to the olfactory center of the brain, so they have the feeling of "taste".

The reason why the dog's sense of smell is so excellent is that it has a large number of olfactory cells, and even the nose mirror has many protrusions and mucosal tissues, which can often secrete mucus to nourish the olfactory cells and keep them highly sensitive. The number and quality of dogs' olfactory cells are superior to those of other animals, so their ability to distinguish various smells is much higher than that of other animals.

It is precisely because of its keen sense of smell that dogs are trained to be used in various occasions, such as post-disaster search and rescue, drug detection, and security inspection of harmful substances. Of course, it can also be used for some interesting purposes according to this feature. For example, robbing private money mentioned above is one of them.

Sniffer dog

Dogs usually rely on their noses to identify each other's identities, and look for their own marks along the way to determine which way to go. Moreover, it is said that dogs can judge a person's mood through their sense of smell and respond accordingly. There are many examples where dogs can smell whether there are some diseases in people's bodies to remind patients. Therefore, the position of dog doctor has also appeared, but the accuracy of disease judgment is not particularly high, and sometimes it is not accurate, so many people are skeptical about the statement that dogs can smell diseases.

Dogs' sense of smell is very important to them. If dogs have a problem with their sense of smell, the inconvenience to their lives is unimaginable, so we should protect them. Don't use some irritating gases to stimulate dogs at ordinary times. When you get along with dogs, don't spray strong-smelling liquids such as perfume. Keep the room ventilated to avoid excessive dust.