Winter in the Rockies can be harsh and cold. The days are shorter, the nights are frigid, and our forests appear to be quiet and barren—as if all the animals are hibernating or have evacuated to warmer climates. But there is more to see than what meets the eye. In the Rocky Mountains we humans make the annual adjustment to the colder months, (some more begrudgingly than others) by bundling up in our warmest jackets, spending more time inside, or relishing the joys of sliding on snow. Just as our lifestyles change come winter, so do the lifestyles and survival adaptations of many animals.