A burrow is a hole or tunnel in the ground made by an animal. Animals dig burrows to live in. Sometimes animals only use burrows for a short time. Many animals dig burrows.
There are many different kinds of burrows. Different kinds of animals make different kinds of burrows. Lots of mammals make burrows. Some mammals that make burrows are moles, gophers, groundhogs, rabbits, meerkats, and kangaroo mice. The biggest mammal that makes a burrow is the polar bear.