Do bear sleep at night?

Most often they make a den under a rock, in a hollow tree, snuggled under a fallen tree, or in a brush pile. In the springtime, as snow melts and food sources become more available, bears wake up from their long hibernation. During the next few months, they rarely sleep at all. read more

During the spring time, grizzly bears are active pretty much all hours of the day and night. That's because they've just become active again after being dormant much of the winter and need to find food to replenish their bodies. read more

Black bears are now considered highly efficient hibernators. They sleep for months without eating, drinking, urinating, or defecating. Hibernators with lower body temperatures, such as chipmunks, woodchucks, and ground squirrels, cannot do this. read more