'In this annual state, a grizzly's heart rate drops from about 40 beats a minute to as low as 10'
hibernation
THE GRIZZLIES: In this annual state, a grizzlys heart rate drops from about 40 beats a minute to as low as 10
In this annual state, a grizzly's heart rate drops from about 40 beats a minute to as low as 10
In this annual state, a grizzly's heart rate drops from about 40 beats a minute to as low as 10
THE GRIZZLIES
hibernation
THE GRIZZLIES