It’s known for its bushy tail and long body. It doesn’t have any stripes on its coat. Ground squirrel: A ground squirrel ...

This species is not a true hibernator and accumulates little body fat prior to winter. Underground caches of food are sources of energy for individuals arousing from short, recurring periods of torpor ...

Rendering courtesy of the National Park Service A shark no larger than a human hand that stalked the ancient sea floor 340 million years ago has been dubbed the “chipmunk shark” by researchers ...