Chipmunks are hardier than we thought, say scientists at the University of Illinois. The furry animals weathered the Ice Age 18,000 years ago in a northern refuge, rather than follow the great ...

WASHINGTON - Chipmunks may not be big, but some of them were pretty hardy. New research indicates a group of the minute mammals toughed it out through the last ice age rather than migrating south. A ...

During the Ice Age, some populations of the eastern chipmunk persisted in the northern United States instead of migrating south to evade encroaching glaciers. That's according to new research to be ...