Wolf man

When Shaun Ellis came upon three abandoned wolf pups, he decided to raise them to be wild in a most unconventional way -- by pretending to be a wolf himself.

Ellis has spent his entire life studying the behavior of wolves and their interaction with humans. The National Geographic Channel followed Ellis' fascinating pursuit, producing a documentary called "A Man Among Wolves" that airs April 16.

First becoming interested in wolves as a child, Ellis says he decided to live among a wolf pack to help bridge the gap between wolves and humans. Ellis readily admits that many people will find it crazy that he lives and behaves like a wolf, but he thinks the ultimate benefits of his experiment make his case.

In the documentary, Ellis describes how he eats and lives with the wolves. His food is placed in a plastic bag inside an animal carcass that the rest of the wolves eat from.

In some ways, Ellis almost stopped being human. He talked about putting his emotions on hold while he was with the animals, because wolves do not feel emotions. When he leaves the pack, he finds it difficult to interact with other human beings. He is a "true wolf man. You can't get closer to wolves than he has," the documentary's producer, Bernard Walton, said of Ellis.

Ellis warns those watching though that "it's very dangerous for people who haven't been trained, who think that they can just walk into a wolf pack and be accepted."