In people's impression, penguin has always been a short-legged bird, chubby and quite cute. When walking, short legs cross small steps and hips twist, which looks playful and lovely. But many people don't understand that penguins are also a kind of birds. Why are other birds' legs so long and penguins' legs so short?
Judging from the short legs of the penguin, it seems that the legs of the penguin are only about 1/8 and 1/7 of the body. Penguins almost mop the floor when they walk, which makes their legs short. However, some people have specially measured Papua penguins, emperor penguins and rockhoppers, and found that their outer legs are about 1/6 of their bodies, but they are still short-legged animals.
Penguins are actually long-legged animals, but according to the skeletal specimens of penguins, the leg bone length of penguins reaches 1/3 of the height of penguins, which means that the legs of penguins are actually long enough to support the weight of their bodies, but we have not found the visual effect. It turns out that penguins, as a kind of birds, actually have two long legs that are almost the same as birds. Because of evolution, they are fatter and have more abdominal muscles, so most of their thighs and calves are hidden in the skin and muscles of their stomachs. People can't see it after reading it, thinking that the short legs exposed by penguins are all their own legs.