Pile up (North American river otters) Grand Teton National Park Savannah Rose Burgess | Jackson, Wyoming Nikon D850 Blustery day (coyote) Yellowstone National Park Adam Brubaker | Island Park, Idaho Nikon D500 Putting our heads together (American bison) Yellowstone National Park Alan Sachanowski | Emigrant, Montana Canon EOS 1D Mark IV Wyoming Wildlife | 21