The stomach of a crocodile is a rocky place to be, for more than one reason. To begin with, a croc's digestive system encounters everything from turtles, fish and birds to giraffes, buffalo, lions and even (when defending territory) other crocodiles. In addition to that bellyful-o'-ecosystem, rocks show up too. The reptiles swallow large stones that stay permanently in their bellies. It's been suggested these are used for ballast in diving.
Since you made it all the way, here are some bonus crocodile facts: The largest croc ever found was 20.24 feet (6.17m) long. These reptiles are cold-blooded, so in winter they hibernate. A croc can lay up to 60 eggs at a time!
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