The animal that has teeth in the stomach is a lobster. Lobsters have their teeth in their stomach.
They chew their food in their stomach, which is very close to their mouth, between three grinding surfaces that look like molar teeth called the “gastric mill”.
The gastric mill is found in crabs, lobsters, crayfish, barnacles, krill, and many others. These invertebrates don’t have teeth in their mouth to grind their food, so they process it a bit differently.
