Wolverine

Deep snowpack means many things to a wolverine mother looking for a den to raise her kits. Warmth. Safety. Security. Wolverines den in snow tunnels up to 175 feet long, under snow that must remain thick until the spring thaw. Although the wolverine is usually a solitary animal, young kits sometimes stay with their mothers until they reach adulthood. However, denning mothers will abandon their snowy hideaways if rising temperatures melt them early, even if the kits aren’t ready to leave.

Scientific name: Gulo gulo
IUCN Red List: Vulnerable
Region: Arctic, West, Rockies