groundhog
(GROUND-hog) A small, furry animal that lives under the ground. It has large front teeth. It digs a burrow.
burrow
(BURR-oh) An underground home that groundhogs and other animals dig. It has rooms connected by tunnels.
hibernates
(HY-burr-nates) Goes into a deep sleep in the winter. Animals hibernate to survive low temperatures and not having food.