As one of the highest-altitude-dwelling mammals, the Himalayan marmot relies on its thick fur for survival through the extreme cold. In the heart of winter it spends more than six months in an exceptionally deep burrow with the rest of its colony. Marmots usually do not resurface until spring, an opportunity not to be missed by hungry predators.
Golden eagles typically fly at around 50 kilometres per hour but can reach speeds of up to 320 kilometres per hour when diving for prey. This, along with their sharp talons, makes them formidable hunters. Normally they kill small mammals, birds, reptiles or fish, but they also eat carrion and have been known to target larger animals too.
Pumas remain playful throughout their lives. Play-fighting teaches cubs vital survival skills including how to hunt, fight and escape. The cubs will stay with their mother for up to two years before gaining independence. They will live a solitary existence as adults until it is their turn to breed.