Why do some animals have eyes on both sides? And some eyes are in front?

This is the genetic inheritance of animals, so just like people, some people are very beautiful because their parents are good-looking, and some people are ugly, that is, their parents are ugly.

In fact, the shape of living things on the earth has evolved according to their own adaptation to natural conditions, just like some herbivores, their eyes are in the front, and those carnivores have eyes on both sides.

Because each animal has different habits, this leads to different body structures. In order to adapt to different environments, our eyes will grow in the most suitable position, so that we can live better.

Why do some animals have eyes on both sides, because each species is different, its living habits and various roles are also different, and they all have their own unique abilities. To exist is to be reasonable.

This is a natural phenomenon formed in the process of evolution, so there is such a difference. So there's nothing surprising about that, just like some animals live in water.

Most birds have eyes on the sides of their heads, and when they spot something, they tend to turn their necks so that one of their eyes is facing the object being looked at. As you said, the bird is in"Peep"You, I don't know if you've noticed, it's bending its neck and looking at you sideways.

When birds are not looking at something, that is, usually, their brains can process all the scenes from both sides at the same time, and once they find something noteworthy, they will tilt their heads and use one of their eyes to look at it.

Scientific studies have shown that if you are facing a bird, it will not be able to spot you. If you can get close to you silently, you can catch the bird facing you alive.

As for the large movement of the eyes of birds, in fact, the range of their eyes is very small, and it is impossible for them to roll their eyes like humans. It's just that when they blink, there's a layer of white inside the eyelids"Inner eyelids"The direction of movement of the inner eyelid is usually 90 degrees from the direction of movement of the outer eyelid, and when the bird blinks, the outer eyelid does not move, but the inner eyelid blinks, so it gives people the illusion that its eyes have white eyeballs flashing and flashing.

If you pay attention, you will notice that the outer eyelids of birds are only used for napping and sleeping, and they do not blink with them.

Birds' eyes grow on the sides of their heads, how do they look forward?

The bird's eyes are long on both sides, and the vision can be rotated 180 degrees, and it can see two different perspectives, which is much larger than the human eye. This is determined by the bird's eye structure. Bird's eye structure is a tiny cavity structure in carbonate rocks, and the shape of the cavity resembles a bird's eye, hence the name.

A sedimentary structure formed by the filling of globlite, calcite, or gypsum cements in argillaceous, microcrystalline or chondrite sedimentary rocks in groups or individually, generally a few millimeters in size, and roughly parallel bird's eye pores. That's why some people call it a sieve, pane, or grid-like structure.

That is to have a wider field of view so that prey or predators can be spotted in time.

Some can see clearly, while others can't see the positive.

For example, horses, elephants.

Cows, deer and other herbivores, their eyes grow on both sides of the head, the things that the two eyes see cannot coincide, the things in front of the head cannot be seen, they only have monocular vision, no binocular vision. Have a wider field of vision, but can't accurately judge the distance of things.

Except for eagles (including owls.

In addition, most birds do not have binocular vision. For example, if you walk a chicken straight in front of you, it tilts its head to look at you and reacts to say that it can't see anything directly in front of its head. Fish also do not possess binocular vision.

Mammal. Mainly carnivores have binocular vision, such as lions, leopards, wolves, bears, etc., the eyes are long in front of the head, the binocular line of sight coincides, and the vision is concentrated, which can accurately judge the three-dimensional sense and distance of things. Primate.

Monkeys, apes, humans, etc.) also have binocular vision.

The eyes of the snail are on the antennae. The snail has two pairs of antennae, and in its larger posture, the tip of the pair of antennae has eyes. The head of the squid has a pair of well-developed eyes on both sides, and its structure is relatively complex, the outermost part is a transparent cornea, without holes; The middle layer is the sclera, and the peripupillary area is buried iridescence.

The starfish's five eyes grow on the tips of each of the five feet. <

1. The snail's eyes are absolutely on the antennae. The snail has two pairs of antennae and eyes at the tip of its larger pair of antennae.

2. There are a pair of developed eyes on both sides of the squid's head, and its structure is relatively complex, with a transparent cornea at the outermost point and no holes; The middle layer is the sclera, and the peripupillary area is iridescence.

3. The starfish's five eyes grow on the tips of each of the five feet.

4. The owl's eyes are located directly in front of the face, and it has excellent depth perception during hunting, especially in dim light environments. The big eyes are fixed in the owl's eye sockets and cannot be turned at all, so the owl has to keep turning its head.

5. The two eyes of the flounder are born on the same side, and the other side has no vision.

Locusts, bees, dragonflies, praying mantises, cicadas.

1. Locusts (collectively known as Orthoptera locusts) Locusts, commonly known as "grasshoppers", belong to the order Orthoptera. It is found in tropical, temperate grasslands and deserts all over the world.

Locusts have 1 pair of compound eyes and 3 single eyes.

2. Bees (insects) Bee honeybee belongs to the general term of Hymenoptera, Slender Lump Suborder, Needle Tail, Bee Family, and Bee Family, and is an important group of Hymenoptera.

Honey bee belongs to the order Hymenoptera, the family Honeybee. The antennae are knee-shaped, the compound eyes are oval, the mouthparts are chewing-sucking, and the hind feet are powder-bearing. Pin Huai Xun.

3. Dragonflies (Insects of the order Paraptera) Dragonflies, invertebrates, phylum Arthropods, Insecta, Winged Subclasses, Dragonflies, Suborder Alterptera, divided into dragonflies and dragonflies.

Generally large, with long, narrow wings, membranous, reticulate wing veins with extremely clear veins. Extremely sensitive vision, 3 in one eye;antennae 1 pair, thin and short.

4. Praying mantis (praying mantis insect) scientific name praying mantis, also known as knife mantis, invertebrate, carnivorous insect. In ancient Greece, people regarded the praying mantis as a prophet, and it was also called a prayer insect because the front arms of the praying mantis looked like a praying maiden.

The head is fan-shaped, smaller;The compound eye is prominent, large and translucent, mainly yellow-green, black in the light at night, monocular, with 3 small dots between the two eyes, that is, monocular.

5. Cicada (Hemiptera) Cicada (scientific name: cicadidae;Ming pure English name: cicada, cicala or cicale), animal kingdom - arthropod phylum - hexapod subphylum - insect class - winged subclass - hemiptera - cervicalbeak suborder - cicada family (the same level has:

Horned cicada, foam cicada, leafhopper, wax cicada). The common cicada is the cicada, commonly known as the cicada, or borrowed seed. Due to the different local dialects, the nicknames also change accordingly, so please check the aliases in the basic information column for more information.

The cicada has two pairs of membranous wings, essentially the same shape, with a broad, short head with a distinctly prominent frontallip base;Visual acuity is quite good, the compound eyes are not large, located on both sides of the head and widely separated, and there are 3 monoculars.