The gray wolf possesses unique adaptations designed to help with mobility. Gray wolves must move quickly, often over snow, to catch prey, and sometimes travel great distance in search of food or new places to live. Wolf toes spread wide when the animals run, giving them a large traction area. Their footpads and nails also help gray wolves grip slippery surfaces when running. The lean, long body of the wolf, couple with its long legs, adapted for swift movement. Gray wolves can reach speeds or 40 miles per hour when chasing prey. The lean, muscular body of the wolf provides the stamina the animals need to travel as far as 18 miles at a brisk trot.