Average males weigh between 100 and 145 pounds with females weighing roughly 10 to 20 percent less. The heaviest on record was caught in Alaska in 1939, weighing 175 pounds. Though the Guinness BOOK of Animal World Records mentions an unconfirmed specimen weighing 230 pounds. They measure 32 to 36 inches shoulder height and 5 to 7 feet in length, from the tip of the nose to the end of the tail. Their long, powerful legs allow them to travel as far as 70 miles a day, and through rough terrain like deep snow. They can reach speeds of up to 40 miles an hour for short periods of time. Their skull measures about 12 inches long. A combination of powerful jaw and neck muscles allows them to break bones and bring down large prey.