A burrower is an animal that digs underground tunnels and chambers. The two most common burrowers are the WOODCHUCK, which has nine letters, and the MOLE, which has four letters. Woodchucks are rodents native to North America and are also known as groundhogs. Moles are small mammals found in many parts of the world and are known for their long snouts and powerful digging claws. Both animals use their burrows for shelter and protection from predators.