Bears don't have exclusive territories they defend from other bears. A bear may occupy a home range that overlaps the territories of other bears and simply avoid them most of the time. A bear's home range can change in size from one year to the next, or from one area to another, depending on the distribution of food and other resources.
Although all species of bears, including black and grizzly bears, are technically of the order Carnivora, they are essentially omnivores that eat plants, insects, fish, and animals.
Bears spend most of their time perusing a patchwork of habitats throughout the year, feeding on vegetation, insects and other more reliable, though lower calorie food sources. Plant foods make up the majority of a bear's diet - sometimes as much as 90 per cent.
Bears use the same vocalizations with humans as with other bears: jaw-popping, woofing, low grumbles and moans. These sounds are rarely a sign of aggression, more often a signal that the bear is concerned, nervous or merely upset at what's going on. If a bear is woofing at you, popping its jaws or moaning it is telling you it is upset or troubled and is communicating to you to move on. Bear cubs bawl.
