Michio Hoshino / Grizzly Bear (Ursus arctos horribilis) shaking off water after a bath, Alaska

Richard Du Toit / Springbok (Antidorcas marsupialis) grazing under tree, Kalahari Gemsbok Park, South Africa

Jim Brandenburg / Gemsbok (Oryx gazella) running across sand dune, Namib Desert, Namibia

Mitsuaki Iwago / African Lion (Panthera leo) mother with cub at dawn, Serengeti National Park, Tanzania

Gerry Ellis / Whistling Thorn (Acacia drepanolobium) tree over savannah, Masai Mara National Reserve, Kenya

Mitsuaki Iwago / African Lion (Panthera leo) cubs playing, Serengeti National Park, Tanzania

Matthias Breiter / Grizzly Bear (Ursus arctos horribilis) cubs silhouetted against water at sunrise, Katmai National Park, Alaska

Tim Fitzharris / Sunrise over Granadier Range, Molas Pass, Weminuche Wilderness, Colorado

Tim Fitzharris / Bald Cypress (Taxodium distichum) grove in freshwater swamp at dawn, Lake Fausse Pointe, Louisiana

Tim Fitzharris / Black-tailed Jackrabbit (Lepus californicus) western North America

Norbert Wu / California Sea Lion (Zalophus californianus) playing in shallow water, Channel Islands, California

Jim Brandenburg / Inuits dog sledding in midnight sun, Ellesmere Island, Nunavut, Canada