What does tundra ferret eat?

There's no such thing as a "tundra ferret." Perhaps you're thinking of the Black-footed Ferret which is a species of ferret that lives in the grasslands of the western United States.

Black-footed ferrets are carnivores, which means they primarily eat meat. Their diet consists mostly of:

* Prairie dogs: These make up the vast majority of their food, as they are abundant in their habitat.

* Other small mammals: This could include mice, voles, rabbits, and even young birds.

* Insects: They occasionally supplement their diet with insects like grasshoppers.

It's important to note that black-footed ferrets are highly specialized to prey on prairie dogs, making them critically endangered as the population of prairie dogs has declined drastically.