To avoid overheating, crocodiles will cover themselves with mud. If you could go down the croc's throat and see inside its stomach, you would see two chambers. One chamber grinds up its food ...
Many animals get their external marking--like, feathers, hair or scales-from genetics. But it turns out, the crocodile gets its head patterns differently.
To figure out whether crocodile heads are more like mud or more like brains, Milinkovitch injected a drug that speeds up growth into the top layer of skin of developing crocodiles. MILINKOVITCH ...