Journey from Canada's Arctic to the boreal forest and discover how polar bears, coastal wolves, lynx and more survive in the North. Timing and seizing opportunity can mean the difference between life and death in this wild and rugged outpost.

Dive deep into South Texas to meet one of America's most endangered cats: the ocelot. With about 120 known ocelots remaining, the future of the U.S. ocelot population relies on ranchers, scientists and government agencies working together.