Howling: Wolves howl as a signal to other wolves, telling of the beginning and ending of a hunt, of a wolf separated from its pack, as a warning to other wolf packs, and simply for the fun of it.

Anatomy: Gray Wolves have strong jaws with sharp teeth, including long canine teeth which tear flesh. Adults are about 4 1/2 feet long and weigh about 80 pounds. They have very good eyesight, acute hearing, and a keen sense of smell.

Hunting and Diet: Wolves hunt in packs and often prey upon animals that are much larger that they are. They mostly eat hoofed mammals, like elk, deer, moose, sheep, and bison, but will eat almost anything, including birds, fish, snakes, lizards, and fruit. Wolves almost never attack people. They swallow food in large chunks, barely chewing it. Wolves can eat up to 20 pounds (9 kg) of meat at one meal. When they return from the hunt, wolves regurgitate some of the food for the hungry pups.