In nature, how your body is built is very important. A cheetah can run at 65 miles an hour, partly because its long tail helps with balance.
Snakes have 400 vertebrae to help them slither around. An owl’s huge eye sockets help it see in the dark.
Vertebrates are grouped into five basic classes. They are amphibians, mammals, reptiles, fish, and birds. In each group, the skeletons look the same, except for size. A toy poodle’s bones, for instance, look like a wolf’s bones, but smaller. Even among unrelated animals, you can see how their skeletons are similar.
