In the idyllic confines of the Rocky Mountains, the challenges for local wildlife are varied and intense. High altitudes, treacherous waterways, native predators, and more make for an ecological tightrope that delivers drama at every turn. Take a thrilling romp into the heart of this legendary North American wilderness.

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Stretching more than 3,000 miles across the U.S.-Canadian border, the Rockies are home to bleak alpine tundra zones. They sit up to 14,000 feet above sea level, with temperatures dropping 3.5 degrees Fahrenheit for every thousand feet of elevation. This means that only the hardiest mountain specialists can cope with its savage conditions, like fur-protected mountain goats and the remarkable hoary marmot.
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In springtime, a narrow corridor in the Canadian Rockies known as the Kootenays is the only area where 16 of North America's native carnivore species come together. It's bad news for the native elk, moose, and caribou--all are aware of this seasonal threat and work hard to ensure they and their young remain one step ahead of danger. Witness the dramatic struggle for survival.