Photo of the Day 74

Red Fox, Denali National Park, Alaska, 2001

Photograph by Joel Sartore

In Alaska's Denali National Park, a red fox opens wide for a yawn. Foxes are masters of adaptation, allowing them to thrive despite environmental pressures. They live in forests, grasslands, mountains, deserts, and even human environments such as farms and suburban areas. They are solitary hunters that feed on rodents, rabbits, birds, small game—even fish, frogs, worms, and garbage.

(Photo shot on assignment for, but not published in, "Grizzly Survival: Their Fate is in Our Hands," July 2001, National Geographic magazine)