Never Cry Wolf (1983)

Research scientist Tyler (Charles Martin Smith) is sent to the desolate Canadian tundra to find out whether the local wolf population is responsible for decimating Canada's caribou herds. Helped by Ootek (Zachary Ittimangnaq), a local Inuit native, Farley manages to establish an observation post and, while braving the harsh climate, begins to study a family of wolves, as well as the caribou. He eventually determines that the greatest danger to the caribou doesn't move on four legs.