The wolf packs in Isle Royale National Park are entering a period when old moose will be rare, making hunting more difficult.
A wildlife ecologist travels to Isle Royale National Park to observe wolves and moose in the longest continuous study of any predator-prey system in the world.
The wolves on Isle Royale in the state of Michigan are suffering from genetically deformed bones. Scientists blame the extreme inbreeding of the small isolated wolf population on the island National Park in northern Lake Superior....
Scientists follow the only surviving wolf pack at Isle Royale National Park as it pursues a cow moose and her frantic calf.
Inbreeding is killing off the wolves of Isle Royale National Park, and as a result, the moose are proliferating, threatening the vegetation on the remote Lake Superior island.