These two Ethiopian wolves are the only survivors of a 23-member pack—but there's still hope. | National Geographic

This is what 51 wolves howling sounds like <3 | Wolf Conservation Center

This is what 50 wolves howling sounds like. | Wolf Conservation Center

Why do wolves howl? The howl of the wolf is one of nature's most evocative and powerful sounds. The haunting chorus of wolves howling is beautiful – or frightening, depending on one’s point of view. Wolves howl to communicate with one another. They locate members of their own pack by howling, and they often engage in a group howl before setting off to hunt. The howl is a clear warning to neighboring wolves to stay away. The howl of the wolf is one of nature's most evocative and powerful sounds.