20 Things You Didn't Know About... Hibernation

It's not as restful as you might think. Especially if you wake up to find you're a new mom.

RELATED TAGS: BRAIN, ECOLOGY

 dormouse

1. In the coming weeks, bears, squirrels, marmots, and many other beasts will emerge from hibernation. An extended period of inactivity might sound relaxing, but hibernation is very different from rest.

2. Actually, it would be more like having a stroke. Oxygen flow to the gray matter of hibernators can drop to as little as 2 percent of normal.

3. Metabolic activity and heart rate also plummet. A ground squirrel’s heart rate can drop from 300 beats per minute to three or four ticks in the same span during hibernation.

4. It’s not just for winter: In tropical Madagascar, the fat-tailed dwarf lemur crawls into tree-holes and shuts down for an average of seven months to deal with a dearth of food and water during the dry season.

5. Warm-weather hibernation, or estivation, is also used by lizards, snails, and turtles.

ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
Collapse bottom bar
DSC-CV0615
+

Log in to your account

X
Email address:
Password:
Remember me
Forgot your password?
No problem. Click here to have it emailed to you.

Not registered yet?

Register now for FREE. It takes only a few seconds to complete. Register now »