Quad mom is one of Yellowstone's most celebrated bears, and over the years, a prolific breeder. It's an important quality because as recently as 40 years ago, bears in the area were placed on the endangered list.
For decades, Yellowstone National Park's ecosystem was out of balance. Its wolves had vanished, and its grizzly bears were pushed to the edge of extinction. Now, through conservation efforts and one of the most ambitious restoration projects in history, the carnivores have returned in record numbers. Host Bill Pullman gives you an up-close look into nature's dramas over the course of a year.
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