20,000 calories a day: Get ready to hibernate

Southwest Life

20,000 calories a day: Get ready to hibernate

For bears, hibernation is not a time of total inactivity. While in their dens, they birth and nurse their cubs.

20,000 calories a day: Get ready to hibernate

For bears, hibernation is not a time of total inactivity. While in their dens, they birth and nurse their cubs.
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