The eastern chipmunk's range covers most of Eastern North America from southern Canada south to the Gulf of Mexico.
They prefer living in deciduous and mixed forests. Chipmunks live in elaborate underground burrow systems with interconnecting tunnels, a nest area, and an area for food storage.
They look for existing tunnels created by roots or other animals and excavate as needed.
Their diet consists of nuts, seeds, fruit, fungi and tubers.
Chipmunks will stuff their internal cheek pouches with nuts or seeds and carry them to their underground storage areas. By late fall, chipmunks can have hundreds of nuts stored for winter, spring, and summer. They spend most of the winter hidden away in their burrows.
A female will have 1-2 litters in either April/June or August/October. The babies are born helpless, blind and naked in the underground nest. After about 40 days they emerge from the den. The mother weans them and about 2 weeks after they leave the nest she abandons them. She will either move them to a new nest or leave them in the old nest and start a new one for herself.
Chipmunks can live to be 8 years old but usually live 2-3 years.