Bison bull, Yellowstone National Park, Wyoming Bison bull, Yellowstone National Park, Wyoming Bison bull among yellow wildflowers, Yellowstone National Park, Wyoming Arrowhead reflection in Horseshoe Lake, Jasper National Park, Alberta, Canada Sunset over The Sawtooth Mountains, Sawtooth National Recreation Area, Idaho Mountain layers at sunset, Manti-La Sal National Forest, Utah Young white rhinoceros, Kruger National Park, South Africa, Africa Wild burro jenny biting its foal's ear, Custer State Park, South Dakota Red-billed oxpecker on a Cape buffalo, Kruger National Park, South Africa Two male Cape giraffe fighting, Imfolozi Game Reserve, South Africa Hippopotamus, Serengeti National Park, Tanzania, East Africa Hippopotamus, Serengeti National Park, Tanzania, East Africa Hippopotamus adult and baby, Serengeti National Park, Tanzania, East Africa Caracal, Serengeti National Park, Tanzania, East Africa, Africa Blue wildebeest cow and calf, Serengeti National Park, Tanzania, East Africa African elephant eye, Imfolozi Game Reserve, South Africa, Africa Olive baboon, Serengeti National Park, Tanzania, East Africa Flock of snow goose blasting off, Bosque del Apache National Wildlife Refuge, New Mexico Cloud at sunset reflected in an unnamed lake, Shoshone National Forest, Wyoming Snow Leopard in the snow, in captivity, near Bozeman, Montana Mountains reflected in a pond along the Denali Highway, Alaska Male greater kudu, Mountain Zebra National Park, South Africa Anna's hummingbird hovering, near Saanich, British Columbia, Canada Swift fox kit, Pawnee National Grassland, Colorado Snow Leopard, near Bozeman, Montana Devil's Tower, Devil's Tower National Monument, Wyoming Dawn at Swiftcurrent Creek, Glacier National Park, Montana Barn owl, Arizona Sonora Desert Museum, Tucson, Arizona Aspen trunks in the fall, White River National Forest, Colorado St. Mary Lake and Wild Goose Island on a cloudy morning, Glacier National Park, Montana Coulds at dawn, St. Mary Lake, Glacier National Park, Montana Tan sandstone boulder among red rocks, Carson National Forest, New Mexico Red cliffs at sunset, Coconino National Forest, Arizona Rock Monitor, Kruger National Park, South Africa Red rock formations at sunset, Coconino National Forest, Arizona Ballooning among red rock formations, Coconino National Forest, Arizona American white pelican landing, Yellowstone National Park, Wyoming Pawnee Butte, Pawnee National Grassland, Colorado Warthog, Samburu National Reserve, Kenya, Africa Two-track lane through fall aspens, near Telluride, Colorado Sunset, Elands Bay, Western Cape Province, South Africa Snow-covered red rock formations, Dixie National Forest, Utah Sneffels Range with fall colors, near Ouray, Colorado Red fox adult and kit reflection, in captivity, Sandstone, Minnesota Pine tree in front of red-rock face with snow on the ground, Dixie National Forest, Utah Mountain lion or cougar in snow, near Bozeman, Montana Male impala, Masai Mara National Reserve, Kenya, Africa Lion walking towards camera, Serengeti National Park, Tanzania, Africa Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 8 Page 9 Page 10