We want to bust a big bear-sized myth! Bears are not true hibernators. Keeper Brent tells us that in the wintertime, when food is scarce, bears will enter a deep sleep state called torpor. Their body temperature, heart rate, breathing, and metabolism are temporarily lowered to conserve energy, but they can come out of this state at any time to look for food. Females can give birth during torpor and the newborn cubs will be able to nurse. Because torpor is linked to the abundance or scarcity of food, our bears, Koots, Denali, and Glacier, don’t enter torpor. Although, they will slow down a little and gain some weight during the winter months.