Jeff Vanuga / Two male Elk {Cervus canadensis} in velvet, resting in foggy meadow at dawn, Yellowstone National Park, Wyoming, USA, July

Sumio Harada / Red Squirrel (Tamiasciurus hudsonicus) in deciduous forest during spring mating season, Rocky Mountains, North America

Shin Yoshino / Mule Deer (Odocoileus hemionus) herd camouflaged in autumn grass, North America