Wolves live across large parts of Europe, Asia, and North America. They have muscular bodies, gray and white fur, and eat a variety of prey including gazelles, deer, and carrion. Wolves live in packs and are more aggressive during mating season and when challenging the alpha male. Wolves are endangered due to being hunted by humans when they attack livestock. There are currently 406 wolves living in Catalonia, and wolf puppies are born blind and deaf, staying with their mother for three weeks.