It’s possible that as many as two hundred thousand gray wolves once thrived across the United States. But human settlements expanded and the species was viewed as a threat to livestock, and wolves were gradually eliminated from most of their original territory.
But in 1995, the U.S. Fish and Wildlife service began a bold movement to capture wild wolves in Canada and reintroduce this formidable predator back into the backcountry of Yellowstone National Park.
Although winter in Yellowstone is a harsh season, wolves remain active. They have two layers of hair – course on the outer and a silky layer closest to their skin – that help them stay warm on even the chilliest, snowiest days.
Wolves live, travel, hunt and raise young in organized groups called packs. A dominant pair – an alpha male and female – are the primary breeders and lead the unit. They will move up to a hundred miles per day in search of prey or territory.
Rarely does a person observe the complexities of a wolf pack from the inside, but naturalist Casey Anderson tracked the silver pack in Yellowstone’s backcountry to learn more about this fascinating species…..
Expedition Wild: Inside the Wolf Pack premieres Monday October 4 at 9P et/pt on Nat Geo WILD!
Video preview: How does the grey wolf survive a brutal Wyoming winter? Casey Anderson explains it to you.