Rus Articles Journal

How animals see? For people everything is normal to see

in three dimensions. It is difficult for us to present that someone can see the world in a different way. But quite so, not boldly, sees its majority of animals. That to experience it, Mikhail Filonov suggests to do the following experience: close one eye and try to fill with water a mug at the same time. Most likely, you will manage to make it, especially not at once if the mug is at a certain distance from an eye. What is it explained by?

Using one eye, you almost lose ability to see the world as got used. You cannot precisely define at what distance, at what depth there are observed objects. You see everything in one plane. And majority of animals.

It is very easy to understand, sees an animal in three dimensions or not: it is enough to look as his eyes settle down. If they are in parallel, on both sides of the head as at a horse, a pigeon or a lizard, the animal does not see in three dimensions. To the contrary, if eyes are located on forward side of the head as at monkeys and cats, it is possible to be sure that the animal sees boldly.

Actually both eyes see objects under slightly different corner. Stratification of two pictures which a little in what differ one from another gives the sight in three dimensions called still binocular or three-dimensional . At animals whose eyes are located on different sides of the head, two pictures do not accumulate, and they do not see boldly. Both ways on which animals see have both advantages, and shortcomings.

For example, at a horse of an eye are located precisely in parallel on sides of the head, so she does not see boldly. But nevertheless it can, without turning the head, to consider what occurs sideways and even behind: its visual field is huge. Sight is adapted for its way of life - absorption of a grass does not demand a distance assessment with a big accuracy.

Eyes of a cat are ahead, he has a binocular sight. He is a hunter and such vision of the world is important for it: it is possible to define precisely distance from which it is necessary to make a jump during hunting. In the nature of herbivores it is much more, than carnivorous. That is why the number of animals who see in three dimensions is small. The most sharp-eyed, sharp-sighted of all animals - birds of prey.

Actually their eyes are located on both sides of the head, but they convex and act forward. Therefore birds see everything that happens ahead and sideways, and to such accuracy of which it is only possible to dream. For example, the falcon, even when he is highly in the sky, can notice a field mouse on the earth and rush to it with lightning speed.

Whether see animal colors? The author of researches considers that some do not distinguish them at all. Others as, for example, a bee, distinguish colors which are absolutely unfamiliar to us. The dog badly distinguishes colors. Even if to train it to distinguish, let us assume, a yellow ball, it continues to confuse it to some gray. The hare, a cat, a raccoon, a bull too badly distinguish colors. People say that the bull is infuriated by red color, but it cannot just be.

It is not enough mammals distinguishing colors. In this regard it is possible to call an ostromordy bear and a humanoid monkey. But here if the subject is painted in very bright tone, it is possible to be sure that any animal will allocate it from others. And it is valid, not for nothing the nature allocated many fishes, insects, Amphibia and other animals with bright coloring.

Rather well distinguish colors of a lizard and a turtle as their eye device contains droplets of yellow fat which play a role of the filtering points. This fat improves contrast and reduces dazzle in the green color from which the animals living among a grass suffer.

Of course, there is no vital information in the given facts. But besides that they are simply curious, perhaps, to somebody it will help to understand attitude of the pet better.