The second highest ranking is the beta wolf. There is usually one alpha male and one alpha female in a pack. The wolf is the largest member of the canine family. It is the ancestor of the domestic dog. It has a muscular, lean, narrow body.
Wolves have long legs and they stand on their toes, adapted for speed and running.
Their large feet aid them in going over rough terrain and deep snow. Wolves have keen senses of sight, hearing, and smell, making them incredible hunters. During a chase, they can reach an estimated 40 mph which they can maintain for up to 20 minutes. Wolves live from 8 to 14 years. Wolves are very selfish when it comes to their territory.