The scales on crocodiles’ heads are very different from the skin appendages of other animals and even distinct from the ...

For reptiles, crocodiles have some pretty distinct skin. Instead of the sleek and smooth scales on snakes and lizards, ...

This is a baby giraffe. And it's born with lovely patterns on its skin. The patterns stay the same all through the giraffe's life. They're like giant spots. What other animals have spots?

The preserved skin is smooth, like that of whales ... is still somewhat flexible and retains evidence of the animal's camouflage pattern. The reptile was counter-shaded - darker on the upper ...

Many animals get their external marking--like, feathers, hair or scales-from genetics. But it turns out, the crocodile gets its head patterns differently.