It stores fat in the base of its tail for winter hibernation.

A black bear's body temperature plummets and its heart rate slows during winter hibernation.

They'd been roused from their winter hibernation by some overzealous hunter.

"We've popped out and broken dormancy on the field," he said, meaning that the field's winter hibernation has ended.

Olympic marmots lose 50% of their body mass over the seven to eight months of winter hibernation.

Percival had come out of his winter hibernation this very week.

The more so at Augusta, the arrival of which each year seems to signal the happy end of winter hibernation.

The bracken is beginning to unfurl from its winter hibernation.

Groups of over a thousand have been recorded on the ceilings of caves during winter hibernation.

Adult flies will emerge from winter hibernation around March to early April.