The northern range of Yellowstone is one of the best places in the world to watch wolves. Size and Behavior. 26–36 inches tall at the shoulder, four to six feet long from nose to tail tip. Males weigh 100–130 pounds, females weigh 80–110 pounds. Home range within the park is 185–310 square miles (300– 500 km2); varies with pack size, food availability, and season.