


People use toothpaste and a toothbrush to clean their teeth. But some crocodiles have a bird friend who cleans their teeth and their mouth. This bird is not afraid of a crocodile at all. It hops right into the crocodile’s huge mouth – and pecks away at tiny bits of food stuck in the crocodile’s teeth. Somehow the crocodile knows that the bird is helping it, so it keeps its mouth wide open.