What does a crayfish have that helps it grind its food?

A crayfish has gastric mills that help it grind its food.

Here's a little more detail:

* Gastric mills are hard, toothed structures located in the crayfish's stomach.

* They work like a grinding mill, crushing and breaking down food particles into smaller pieces.

* This is essential for digestion, allowing the crayfish to extract nutrients from its meals.

Let me know if you'd like to know more about crayfish!