Wolves are wild dogs that live and hunt in packs, bonding closely with other members. They can thrive in forests, tundra, grasslands and deserts, and their populations are found in Alaska, northern U.S., and Canada as well as Europe and Asia. Wolves are carnivores that prey on large mammals like deer and moose but also scavenge on dead animals. They communicate through distinctive howls, barks and growls. While once endangered, wolf populations are currently stable.