Being opportunistic omnivores, black bears will eat whatever they find to be available, from vegetation, small mammals, or berries in the forest, to digging through garbage in human populated areas. Black bears have relatively small ears and eyes and don’t rely on sight and hearing as much as their sense of smell. They have an excellent sense of smell and can detect scents from up to two miles away. Their color is generally uniform with a lighter brown muzzle and markings on their chest; western populations can vary from cinnamon, blonde, and black. With the exception of a mother and her cubs, the black bear is a solitary animal. They hibernate in the winter depending on the weather of the area, periodically waking to leave the den. In warmer climates with abundant food sources, they may not hibernate at all. These bears can run up to 30 mph and are adept at both swimming and climbing. Black bears are threatened due to habitat loss and human-caused mortality.