Historically, wolves were found from the tundra to the prairies, from the Rocky Mountains to the Northern Forests. But they will also eat smaller mammals, as well as some nuts, insects and berries. They tend to target weaker animals the sick, injured, very old or young thus playing an important role in strengthening ungulate populations. Wolves require anywhere from 2 to 5 pounds of meat a day, but may go for several days without eating and then consume 22 pounds of meat at once. The average male wolf stands about 2.5 feet high, and weighs 70 to 110 pounds.
Females are slightly smaller.
They can live up to 13 years in the wild. The gray wolf breeds during February and March, and after two months, females give birth to a litter of four to six one-pound pups, about half of which survive. Packs require a large territory, with larger packs needing up to 1000 square miles. They can reach speeds of up to 35 mph during a chase. Wolves are very shy of humans, and avoid them whenever possible.