Why do some animals always have the darkest coat on their backs and slowly lighten when they extend

This is also a normal physiological phenomenon, the color of animals is protective, and it has a lot to do with their environment, which can help to avoid catching their prey, and the distribution of coat color depends entirely on these pigment cells.

Because most animals have their backs facing up to the sun, and their bellies facing down to the sun. Therefore, the deposition of back pigment, on the one hand, can greatly increase the absorption of sunlight heat, better achieve temperature regulation, and on the other hand, it can also reflect ultraviolet radiation to achieve ultraviolet protection.

Dark-colored hair or ** can reflect ultraviolet radiation well and reduce ultraviolet damage. Most animals have their backs up and their bellies facing down with their backs to the sun, and over time, this color difference has evolved.

There are many life forms on the earth where we live, including plants, animals, and various microorganisms. Among them, animals are one of the great joys of our lives, and with the improvement of people's living standards, we pay more and more attention to the life of the animal kingdom, animals living in natureWhy do some animals always have the darkest coat on their backs and slowly become lighter? In fact, there are many reasons for this, such as the influence of the environment, changes in the weather, and changes in the body of the animals themselves, etc., let's analyze them in detail.

This is the protective color of the animal. The color of the animal's back coat is to be consistent with the surrounding environment, camouflage itself in order to survive better.

This is the protective color of the animal and is affected by the environment and the season. In order to protect themselves, the color of the animal's coat changes under certain circumstances. For example, the ptarmigan has white feathers in winter and brown or gray with horizontal spots in spring and summer.

This has to do with the environment in which the animals live, they change their color according to the seasons, and in order to avoid being hunted by enemies, they disguise themselves as one with nature.

Darwin said that natural selection, survival of the fittest, animals live in the wild, when preying or avoiding natural enemies, dark fur better hides itself, is not easy to be found, can escape natural enemies, improve survival rate.

The dark color on the back can better hide yourself to achieve the effect of protection.

The color from dark to light is a kind of protection for him, and the dark color on his back is not easy to find.

Most animals are dark on their backs and light on their bellies.

Each animal has evolved its own protective color.

This is a phenomenon caused by the theory of evolution. Some animals need to hide themselves on the ground, and the fur on their backs is mostly a protective color close to the color of the ground.

It should be a long-term evolution to better protect yourself.

This is a phenomenon caused by the theory of evolution, which can better hide itself in order to achieve a protective effect.

This is the result of the natural evolution of species.

Every animal has its own genetic determination.

This is to better protect yourself.

This may be to better protect yourself.

Animals have a lighter belly coat than a back coat because the back hair needs to be protected from sunlight or used for camouflage.

Because of the dark coat on the back, some animals are very easy to hunt, but if they are shallow, it may be a little more difficult to hunt.

Because his back is often exposed to the sun, variety shows have melanin. There is also a different function, in addition to keeping warm, the back also has the role of camouflage.

Because the hair on the back mainly plays the role of protection and camouflage, while the hair on the abdomen mainly plays the role of warmth.

Because these hairs have not been exposed to the sun, the hair on the back is exposed to the sun.

Because the back of the animal is often exposed to the sun, melanin is deposited, and the abdomen is like a black man's hand, which is relatively white.

I think it's because the abdomen basically can't stand the sun, so the color will naturally be lighter.

The general explanations, like those that we can easily understand, whether they are flying in the sky, running on the ground, or swimming in the water, most of themThey all face up with their backs facing the sun and their bellies facing down with their backs to the sun.

Therefore, the deposition of back pigment, on the one hand, can greatly increase the absorption of sunlight heat and better achieve temperature regulation; On the other hand, it can also reflect ultraviolet radiation and achieve ultraviolet protection.

In fact, this camouflage is crucial for predators or predators: the former need to hide themselves to sneak up on their prey, and the latter need to hide themselves from predators.

Walking in the rock pile, the sun shines on the ground, and the white color of the goat's abdomen more or less neutralizes the shadow that should be present in the abdomen, so that its color is homogenized and less easy to spot.

Even in the deeper sea, because of the lack of light, it is no longer meaningful what color it is, so some bioluminescent animals will fill in the light to increase their brightness to match the background.

It's also important to note that the law of reflective camouflage with a deep back and a shallow belly is not 100% applied in all animalsIn fact, there are many animals with uniform back and belly, such as the polar bear, giant panda and so on that we are familiar with (but this is also related to the environment in which they live, such as a single ice field, dense bamboo forest, etc.).

In addition, there are even some animals that are anti-anti-camouflage, that is, conversely, the back is lighter and lighter, and the belly is darker, and this anti-anti-camouflage is divided into two situations.

In the case of skunks and honey badgers, as shown below, this coloring actually has more natural contrast under natural light, but this makes for a conspicuous warning color – don't mess with me, I'll release a stink attack.

On the other hand, it may be common for this anti-shadow camouflage animal to have its abdomen facing up.

Finally, it's not just the idea that anti-shadow camouflage is not only present in living creatures, but even dinosaurs, which were extinct hundreds of millions of years ago, also had this dark and light color pattern.

By analyzing the remnants of the original pigments on the fossils, it is possible to reconstruct the original colors that the dinosaurs may have had, and it can be found that they also have a clear anti-camouflage.

Of course we know, moveThe reflection camouflage of an object is very related to the surrounding environment in which it lives, so the study of the color of dinosaurs can also help us better restore the earth's environment at that time.

The hair on the animal's stomach is not only lighter than the back of the animal, but also relatively soft, which is a kind of self-protection effect of the animal.

This is a special manifestation of animal evolution, which can be regarded as self-preservation. The back is for others to see.

Because it's the result of their evolution over a long period of time, isn't it?

Because the hair on the belly is invisible to others, others have to adapt to the environment.

Because we all know the belly, he is not often exposed to the outside, so the hair is relatively light.

I think this is due to the influence of certain environmental factors.

I think it's because of some special reasons, don't you think so?

Because we all know the belly words, he is not often exposed.