Have you ever seen a three legged animal? Why are animals with three legs?

I've seen three-legged animals, because three-legged animals are three-legged because they lose one leg.

This was the case with one of my family's previous dogs. Once an old man in the village said that our dog had eaten something from his house and wanted to cut down our dog. But that time, my dog ran faster and ended up getting a knife in the back of the thigh.

As of August 2019, only one three-legged animal has been found in the real world. Three-legged fish - tripod fish.

At the bottom of the deep sea at about 2,000 meters, scientists took a deep-sea submersible to investigate and found a strange fish"Three legs"Stand on the bottom of the sea in a three-legged position.

This strange fish has no name, so people call it this fish"Dingzu fish"。Three tripods"legs", developed by a pair of pectoral fins and a caudal fin. These three legs are slender and tough, and they are both the locomotor organs and sensory organs of the tripod, and there are many sensory nerve endings distributed on these three slender fins.

Humans, monkeys, orangutans, chickens, ducks, geese, ostriches, crows.

1. Birds are two-legged movements, and there are many species, second only to fish among vertebrates. In the 21st century, there are more than 9,000 species of birds known worldwide, and more than 1,300 species have been recorded in China alone. For example:

Ostriches, loomers, grouse, whirling woodfinch, rock pipits, wrens, peacebirds, great bustards, hairy-legged sandgrouse, sand larks, sand pengs, sand finch, parrots, grass owls, hornbills, biting cuckoos, broad-billed birds, eight-colored thrushes, peace birds, etc.

2. As artificially raised birds, animals are also two-legged animals, generally pheasants and ducks, such as chickens, ducks, geese, etc., and there are also birds of other families such as turkeys, pigeons, quails and various songbirds.

1. There are no three-legged animals in the world, the reasons are as follows, it is very normal to not have three legs, because animals evolved to adapt to our world and improve their ability to survive.

2. Flying animal sparrows as an example, although they fly without effort, rarely walk, if they grow three legs, it will not be like walking as unbalanced, but because their natural enemies are very many, pay more attention to flying, if you add a leg, it will increase their resistance, affect escape, in order to survive, they will not develop like three legs, land animals like tigers, are four-legged animals, whether it is three legs or five legs, will affect their speed, Whether it's grabbing food or protecting yourself, it's very troublesome, and it's inconvenient and easier to die in the wilderness.