What happens when two powerful bulls are evenly matched?
The beavers of Yellowstone fell hundreds of cottonwood trees every year as they construct their homes.
Now she has four babies to fatten up for the winter. Her secret? Pine nuts.
One of Yellowstone’s smallest migrating birds fights to defend his flower patch.
All the baby animals have come out to play.
Red fox can hear the sounds of mice under six feet of snow during freezing Yellowstone winters.