Well, they swallow rocks, but they aren't digesting them. These rocks hang around inside the body for a while - they're called gastroliths. read more
Crocodiles don't swallow stones out of appreciation for the taste. They do it because the stones help with basic digestion, according to the Miami Science Museum. Rocks in a crocodile's stomach help crush and grate food. Rock swallowing is especially beneficial for crocodiles who eat whole prey, particularly animals with shells and tough bones. read more
Alligators and crocodiles will eat rocks to help grind up their food in their stomach. Yes. Alligators and crocodiles will eat rocks to help grind up their food in their stomach. read more