Tui De Roy / Olive Ridley Sea Turtle (Lepidochelys olivacea), Oaxaca, Mexico

Theo Allofs / Little Bee-eater (Merops pusillus) group, Moremi Game Reserve, Okavango Delta, Botswana

Theo Allofs / Grey Heron (Ardea cinerea) taking flight with fish prey, Pantanal, Brazil

Theo Allofs / Giant River Otter (Pteronura brasiliensis) swimming, Pantanal, Brazil

Theo Allofs / Jaguar (Panthera onca), Pantanal, Brazil

Theo Allofs / Giant River Otter (Pteronura brasiliensis) feeding on fish prey, Pantanal, Brazil

Juergen & Christine Sohns / Brown Bear (Ursus arctos), native to northern hemisphere

Richard Du Toit / African Elephant (Loxodonta africana) calves with adult at waterhole, Addo National Park, South Africa. Sequence 3 of 4

Suzi Eszterhas / Meerkat (Suricata suricatta) on alert with three-week-old pups, Makgadikgadi Pans, Botswana

Suzi Eszterhas / Meerkat (Suricata suricatta), duplicate of 00649947

Suzi Eszterhas / Meerkat (Suricata suricatta) two-week-old pups, Makgadikgadi Pans, Botswana

Suzi Eszterhas / Meerkat (Suricata suricatta) mother nursing two-week-old pups, Makgadikgadi Pans, Botswana

Suzi Eszterhas / Meerkat (Suricata suricatta) two-week-old pups, Makgadikgadi Pans, Botswana

Chase Dekker / Car on road in driving through colorul autumn forest, Green Mountains, Vermont

Chase Dekker / Great Gray Owl (Strix nebulosa), Sierra Nevada, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) breaching, Monterey Bay, California

Chase Dekker / Humpback Whale (Megaptera novaeangliae) breaching, Monterey Bay, California

Chase Dekker / Red Fox (Vulpes vulpes) pups, Rocky Mountains, Colorado

Chase Dekker / Brown Bear (Ursus arctos), Katmai National Park, Alaska

Chase Dekker / Brown Bear (Ursus arctos) feeding on sedge grass, Katmai National Park, Alaska

Luciano Candisani / Jacare Caiman (Caiman yacare) with fish school, Pantanal, Brazil

Luciano Candisani / Brown-throated Three-toed Sloth (Bradypus variegatus) in atlantic Rainforest, Brazil

Benjamin Olson / Brown Bear (Ursus arctos) male foraging for salmon, Katmai National Park, Alaska

Mark Raycroft / Caribou (Rangifer tarandus) male, female, and calf, North America

Mark Raycroft / Caribou (Rangifer tarandus) male running, North America

Mark Raycroft / Chocolate Labrador Retriever (Canis familiaris) puppy, North America

Suzi Eszterhas / Hoffmann's Two-toed Sloth (Choloepus hoffmanni) mother and young, Puerto Viejo de Talamanca, Costa Rica

Suzi Eszterhas / Brown-throated Three-toed Sloth (Bradypus variegatus) mother with four-month-old young, Puerto Viejo de Talamanca, Costa Rica

Suzi Eszterhas / Brown-throated Three-toed Sloth (Bradypus variegatus) four-month-old young, Puerto Viejo de Talamanca, Costa Rica

Suzi Eszterhas / Brown-throated Three-toed Sloth (Bradypus variegatus) male hanging in vine, Puerto Viejo de Talamanca, Costa Rica

Ch'ien Lee / Lesser Dawn Bat (Eonycteris spelaea) feeding on Durian Pulu (Durio kutejensis) flower nectar at night, Sarawak, Borneo, Malaysia

Ch'ien Lee / Huntsman Spider (Heteropoda sp) defending egg sac from Peters' Bow-fingered Gecko (Cyrtodactylus consobrinus), Gua Baju, Sarawak, Borneo, Malaysia

Ch'ien Lee / Australasian Giant Centipede (Ethmostigmus rubripes) recently molted juvenile, Sarawak, Borneo, Malaysia

Jami Tarris / Jaguar (Panthera onca) cub, Pantanal, Brazil

Jami Tarris / Mountain Gorilla (Gorilla gorilla beringei) mother and juvenile, Bwindi Impenetrable National Park, Uganda

Tim Fitzharris / Joshua Tree (Yucca brevifolia) group and boulders, Joshua Tree National Park, California

Tim Fitzharris / Saguaro (Carnegiea gigantea) cactus, Neale Mesa and Aquarius Mountains, Arizona

Tim Fitzharris / Forest and mountains in autumn, San Juan Mountains, Colorado

Chase Dekker / Common Dolphin (Delphinus delphis) surfacing, California

Chase Dekker / Orca (Orcinus orca) male surfacing, Monterey Bay, California

Roland Seitre / Naked Mole Rat (Heterocephalus glaber), native to Africa

Roland Seitre / Darling's Mole-rat (Cryptomys darlingi) incisors, native to Africa

Roland Seitre / Darling's Mole-rat (Cryptomys darlingi), native to Africa

Roland Seitre / Darling's Mole-rat (Cryptomys darlingi), native to Africa

Roland Seitre / Angolan Giant Mole-rat (Cryptomys mechowi), native to Africa

Roland Seitre / Angolan Giant Mole-rat (Cryptomys mechowi), native to Africa

Roland Seitre / Angolan Giant Mole-rat (Cryptomys mechowi), native to Africa

Roland Seitre / Lesser Egyptian Jerboa (Jaculus jaculus), native to Africa