Why do most animals have wet noses? Why aren t human noses wet?

Evolutionary reasons are that humans don't need an overly sensitive sense of smell, so the nose is no longer damp. <>

1. Primate wet nose:

In fact, primates also have wet noses, and the ancestors of primates differentiated into two branches a long time ago, dry nose primates and wet nose primates, and you can distinguish them by touching whether the nose is wet or not, and it is obvious that we humans belong to the dry nose primates, our cousins: gorillas.

Chimpanzees and dwarf orangutans are dry-nosed primates. And lemurs.

of primates are all wet-nosed primates.

2. Why do humans have dry noses?

From the classification of dry-nose primates and wet-nose primates, we can see that both dry noses and wet noses are the result of evolution and natural choice. It is very likely that our ancestors all had wet noses, because wet noses were easier to survive in nature in the early days, and wet noses were more conducive to capturing odor molecules in the air, but with the evolution of human beings, we gradually abandoned wet noses, first of all, we gave up the life of day and night, and because of the use of tools, we gradually went to the ground to live, which did not require a strong sense of smell, and instead evolved better vision and a strong brain.

Vision is more important in the history of human existence, because our main diet is insects and fruits, and we need to see with our eyes, rather than lying on them to smell, so some primates slowly lose part of their sense of smell, and later began to use tools to hunt, paying more attention to vision, and the sense of smell was gradually abandoned in evolution because it was not important.

There is another reason that sweat glands have evolved on our human **.

Sweat glands are a very peculiar thing, few creatures in nature have, we can sweat and dissipate heat with sweat glands, while other animals cannot, such as dogs, dogs will secrete a kind of snot to help evaporate too much heat when it is hot, and humans rely on ** The effect is better, so naturally there is no need to wet the nose.

The human nose is very special, there is currently no similar species except humans, although our nose smell is not as good as that of wild animals.

Sensitive, but able to distinguish between quite complex and slight temperatures, is actually very powerful.

The noses of many animals are wet because these animals have a sensitive sense of smell and have to identify things through their sense of smell, while the human sense of smell is not so sensitive, and humans mainly rely on their eyes to identify.

Because animals need to use their sense of smell to hunt or avoid hazards, etc., the nose is wet to improve their sense of smell. And humans don't need their sense of smell to avoid hazards, so their noses are dry.

Many animals can observe the state of their health by the state of their noses. For example, cats, dogs and other animals, their noses are often wet, this is to make the sense of smell more sensitive. For human beings, in the process of survival, there is no need to rely on an overly sensitive sense of smell, so the nose is dry.

The reason why animals have wet noses is because their noses have many mucus-secreting glands, and they often stick out their tongues to lick the tip of their noses to keep them moist, which may be a function they evolved to sense the temperature and humidity of the air. And human beings have more developed peripheral nerves on the fingertips, so there is no need to feel these things with the nose, so the glands of the nose are degenerated, and our tongue is not long enough to lick the tip of the nose, so our nose is not wet.

Because there is a difference between animals and humans, and animals have a lot of secretions, while humans have very little secretions, and this is also based on science, so we must look at it rationally.

Because the nose of animals is wet, it can play a role in keeping warm and hydrating, and the evolution of animals and humans is different, so the nose of humans is not like this.

Because many animals rely on their sense of smell to hunt, this structure can make their sense of smell more sensitive, and humans do not hunt like this, so the structure is different.

This is the result of evolution, because animals need to feel external things through their noses, wet noses have better stickiness, and humans don't need to use their noses to feel external things.

Because this is the result of a long period of evolution, most animals have noses that are only able to work well if they are wet, while humans do not.

Because most animals do not have sweat glands except for the nose, the heat removal function of the whole body basically depends on the nose, and the animal's ratio is the most important in the senses, and the humidity in the air can also be felt. As a result, most animals have wet noses. And the human sweat glands are very developed, so the nose will not get wet.

Because wet noses have a better sense of smell and are more suitable for nocturnal movement and to catch prey by smell, wet noses are beneficial for survival in the early stages of evolution. Humans are not, probably because humans have chosen to evolve and intensify around the visual and brain, and are diurnal creatures that don't need much of a sense of smell.

Animals have very sensitive noses, because they rely on their sense of smell to escape and prey, so they will often lick their noses to keep them moist, also to keep their noses sensitive. Humans rely mainly on their eyes, and the nose does not need to be kept moist.

Because the glands in the nose of animals secrete a mucus that helps them chase their prey more effectively, humans do not need to chase their prey through their noses, so they do not produce this mucus.

Most animals have wet noses, but humans don't, because most animals have very sensitive noses, which is to better catch prey, and people slowly become dry noses in the process of evolution, and gradually transfer the sense of smell to the visual, taste and brain.

Because we are diurnal, we don't need smell during the day; In addition, they rely on their eyes to search for food for a long time, and their sense of smell deteriorates.

Because evolution is different, humans don't need to hunt, so the nose is not wet, and animals need to hunt.

Because the nose of animals is used to perspire, and the ** of our human body can perspire, so the human nose will not appear such a situation.

In fact, there is also a misunderstanding in the subject's question, that is, the human nose will also remain moist, such as when the nose is runny, or when sweating, but, relatively speaking, the number of such times is relatively rare. It is because human beings have optimized their genes in the long process of evolution.

The mucus on the nose of most animals can help the animal to increase its sense of smell and capture prey. Humans, on the other hand, perform a series of operations through their own visual effects.

That's because they need to look for their prey through their noses, and they can use the secretions on their noses to determine where their prey is and how to be invisible, while humans don't. Man can catch prey through his eyes, and through his own development, he can catch prey beyond visual distance.

Because people and animals are different, the wet nose of an animal is a sign of health, and not all animals have a wet nose, such as rabbits, chickens, etc.

Most animals have wet noses, but we humans are not, in fact, this is not the difference in structure, but due to the results of evolution, the sense of smell of wet noses will be better, more suitable for catching prey and acting at night,And we humans are diurnal animals, and we don't catch prey, so our noses are dry, and human evolution is like this, it will develop in our favor and eliminate what we don't need, so that human beings can progress and survive better.

We all evolved from primates, and primates are mainly divided into two types, one is a dry-nosed primate, and the other is a wet-nosed primate, as for whether it is dry or wet, we can tell by touching and seeingThe dry-nosed primates are humans, chimpanzees and bonobos, the tarsiers are actually dry-nosed primates, and the wet-nosed primates are the lemurs, and this differentiation is actually based on the living environment and living habits.

Why we are dry-nosed primates, in fact, we still have to start with our ancestors, although our ancestors also need to hunt, but they are still mainly eye-based, and most of the food is seen with the eyesOur ancestors didn't hunt by smell, but by brains and flexible limbs, so we evolved mainly around these aspects, so our sense of smell would not be as developed as that of wet-nosed primates.

And we don't have to travel at nightBut like some wet-nosed primates are nocturnal, their sensitive sense of smell is more conducive to their activities, and they mainly rely on their sense of smell to find food, because they do not have well-developed limbs and intelligent brains like us humansTherefore, the dry and wet nose has nothing to do with the ** structure, this is mainly to make us live a better life, whether it is humans or animals are evolved over a long period of time, then what can be left is definitely the most suitable for us, and it is also what we need the most.

These animals have wet noses, and they detoxify and perspire through their noses. There are no pores in the body that drain away sweat. So the structure is different from the S human body, a very special animal.

Most animal noses are wet, the structure is different, because most animals do not have sweat glands, human sweat can be emitted through the pores in **, animals do not have sweat glands, can only dissipate heat through the nose.

Most animals have very sensitive noses, often feel wet to the touch, human beings, as animals, but unlike most animals, the nose is different from other animals, humans evolved from apes, or some different from other animals.

Because humans and animals are two species, some body functions and structures such as organs and tissues are naturally different. Animals have wet noses to maintain their sense of smell, to hunt, and so on, while humans do not.

This is because the species evolved, most animals are nocturnal animals and a wet nose will help them hunt better, whereas humans are diurnal animals.

Because human beings belong to higher animals, they are very different from ordinary animals, so most animals have wet noses, and the ** structure is not the same, but humans are not.