Bears Eat Dirt?
- 1m 49s
- HD
- TV-PG
After months of hibernation, Yellowstone's grizzly bears immediately eat volcanic soil to jumpstart their digestive systems. The soil contains potassium and magnesium, which kill off parasites that cause diarrhea.
After months of hibernation, Yellowstone's grizzly bears immediately eat volcanic soil to jumpstart their digestive systems. The soil contains potassium and magnesium, which kill off parasites that cause diarrhea.