The typical size of a gray wolf is between 41 and 63 inches long and 32 to 34 inches high at the shoulder. Male wolves are a bit larger than females.
The weight of the wolf depends on its habitat. European wolves are the heaviest, with a weight of 85 pounds. Wolves in North America weigh about 6 pounds less, and Arabian wolves are considerably smaller at around 55 pounds. It is unusual to find a gray wolf that weighs over 120 pounds, though there have been individuals that have weighed up to 190 pounds. A gray wolf's tail measures between 14 and 20 inches.