As six animal babies approach the end of their first year on Earth, they must take on the most complex challenges of their lives. One of our closest cousins, a mountain gorilla infant, must learn the co-ordination to roam free in a tiny fragment of forest.

In Iceland, an Arctic fox cub rejected by his mother must learn where to find food for the first time. And in Kenya, spotted hyena twin sisters must roam a territory they share with the biggest threat to their lives – lions. Whether breaking ties or building bonds all the babies must learn for themselves how to stay healthy and safe. Show less