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View from Park Service platform where adult brown bears (Ursus arctos) forage for salmon, Katmai National Park, Alaska, United States of America
Red Deer, Killarney National Park, County Kerry, Munster, Republic of Ireland, Europe
A gathering of lemon emigrant butterflies (Catopsilia pomona), Yala National Park, Sri Lanka, Asia
Tarcoles River, Carara National Park, Puntarenas Province, Costa Rica, Central America
Eurasian elk (Alces alces), feeding in swamp, Biebrza National Park, Poland, Europe
Eurasian elk (Alces alces), feeding in swamp, Biebrza National Park, Poland, Europe
Wild European bison (Bison bonasus) walking in a meadow in winter, Bialowieza National Park, Poland, Europe
Young leopard (Panthera pardus) peering out from a tree, South Luangwa National Park, Zambia, Africa
A school of bigeye trevally (Caranx sexfasciatus), Sebayur Island, Komodo Island National Park, Indonesia, Southeast Asia, Asia
Cheetah (Acinonyx jubatus) cub, Serengeti National Park, Tanzania, East Africa, Africa
Swallow-tailed bee-eater (Merops hirundineus), Kgalagadi Transfrontier Park encompassing the former Kalahari Gemsbok National Park, South Africa, Africa
Fork-tailed drongo (Dicrurus adsimilis), Kgalagadi Transfrontier Park encompassing the former Kalahari Gemsbok National Park, South Africa, Africa
Black Bear (Ursus americanus), cinnamon yearling cub, Yellowstone National Park, Wyoming, United States of America, North America
Red Fox (Vulpes vulpes or Vulpes fulva), Yellowstone National Park, Wyoming, United States of America, North America
African Lion, Serengeti National Park, Tanzania, East Africa, Africa
Running Guanaco (Lama guanicoe), Patagonia National Park, Chacabuco Valley, Aysen Region, Patagonia, Chile, South America
Asian elephant in Udawalawe National Park, Sri Lanka, Asia
Yellow billed stork (Mycteria ibis) fighting, Lake Manyara National Park, Tanzania, East Africa, Africa
Two young elephants tussling, Samburu National Reserve, Kenya, East Africa, Africa
Transient killer whale (Orcinus orca) breaching in the Monterey Bay National Marine Sanctuary, California, United States of America, North America
Adult male Thornicrofts giraffes (Giraffa camelopardalis thornicrofti), South Luangwa National Park, Zambia, Africa
Adult great white pelicans (Pelecanus onocrotalus), on the Zambezi River, Mosi-oa-Tunya National Park, Zambia, Africa
Humpback whale (Megaptera novaeangliae), breaching in Monterey Bay National Marine Sanctuary, California, United States of America, North America
Cape buffalo (Syncerus caffer), Chobe National Park, Botswana, Africa
African elephants (Loxodonta africana) at sunset, Chobe National Park, Botswana, Africa
Leopard (Panthera pardus) female, Chobe National Park, Botswana, Africa
James's flamingos (Phoenicoparrus jamesi), Salar de Tara y Aguas Calientes I, Los Flamencos National Reserve, Chile, South America
View of winding road toward Edale, Vale of Edale, Peak District National Park, Derbyshire, England, United Kingdom, Europe
Adult glossy ibis (Plegadis falcinellus), Lake Manyara National Park, Tanzania, East Africa, Africa
Ruppell's vultures (Gyps rueppelli), on the carcass of a plains zebra in Serengeti National Park, Tanzania, East Africa, Africa
Black-legged kittiwake (Rissa tridactyla) pair on nest in McBride Inlet, Glacier Bay National Park, Alaska, United States of America, North America
Lonely ostrich (Struthio) walking in the salt pan in the middle of Etosha, Etosha National Park, Namibia, Africa
Great white egret (Ardea alba) looking for food, Sanibel Island, J.N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America
Leopard (Panthera pardus), resting in a tree in the Maasai Mara National Reserve, Kenya, East Africa, Africa
A Lion (Panthera leo) in the brush in the Maasai Mara National Reserve, Kenya, East Africa, Africa
A Leopard (Panthera pardus) and cub in the Maasai Mara National Reserve, Kenya, East Africa, Africa
A heard of Zebra (Equus quagga), Amboseli National Park, Kenya, East Africa, Africa
A Leopard (Panthera pardus) in the Maasai Mara National Reserve, Kenya, East Africa, Africa
Migratory blue wildebeest (Connochaetes taurinus) crossing the Mara River, Masai Mara National Reserve, Kenya, East Africa, Africa
Elephants seen on a Safari in the Maasai Mara National Reserve, Kenya, East Africa, Africa
Elephant seen on a Safari in the Maasai Mara National Reserve, Kenya, East Africa, Africa
Adult Australian bustard (Ardeotis australis), taking flight at Cape Range National Park, Western Australia, Australia, Pacific
Reticulated giraffe (Giraffa camelopardalis reticulata) (Giraffa reticulata) and Grevy's zebra (Equus grevyi), Buffalo Springs National Reserve, Samburu National Park, Kenya, East Africa, Africa
Reticulated giraffe (Giraffa camelopardalis reticulata) (Giraffa reticulata) at dawn, Buffalo Springs National Reserve, Samburu National Park, Kenya, East Africa, Africa
Lioness, Marataba, Marakele National Park, South Africa, Africa
Aerial of massive numbers of Cormorants on the sand dunes along the Atlantic coast, Namibe (Namib) desert, Iona National Park, Namibe, Angola, Africa
A group of Red Deer (Cervus elaphus), among bracken in Exmoor countryside, near Dunster, Exmoor National Park, Somerset, England, United Kingdom, Europe
Brazilian merganser (Mergus octosetaceus) swimming in a river, Serra da Canastra National Park, Minas Gerais, Brazil, South America
Rocky mountain bighorn rams headbutting (ovis canadensis) during the rut (mating) season, Jasper National Park, UNESCO World Heritage Site, Alberta, Canadian Rockies, Canada, North America
Rocky mountain bighorn ram (ovis canadensis) during the rut (mating) season, Jasper National Park, UNESCO World Heritage Site, Alberta, Canadian Rockies, Canada, North America
Rocky mountain bighorn rams (ovis canadensis) during the rut (mating) season, Jasper National Park, UNESCO World Heritage Site, Alberta, Canadian Rockies, Canada, North America
Water buffalo on his way home, Taketomi Island National Park, Ishigaki, Yaeyama island group, Japan, Asia
View of tourists watching young Steenboks on game drive in Kruger National Park, South Africa, Africa
View of white backed vulture (Gyps africanus) in tree on game drive in Kruger National Park, South Africa, Africa
View of Southern giraffe (Giraffa camelopardalis giraffa) on game drive in Kruger National Park, South Africa, Africa
Zebra (Equus quagga crawshayi), often seen in South Luangwa National Park, Zambia, Africa
One Horned Rhino, Kaziranga National Park, Assam, India, Asia
Canoe trip with swans on Lake Srovinaitis around Ginuciai, Aukstaitija National Park, Lithuania, Europe
Canoe trip with swans on Lake Srovinaitis around Ginuciai, Aukstaitija National Park, Lithuania, Europe
Roseate spoonbill (Ajaia ajaja), J. N. "Ding" Darling National Wildlife Refuge, Florida, United States of America, North America
Indian tiger (Bengal tiger) (Panthera tigris tigris), cub at the samba deer kill, Bandhavgarh National Park, Madhya Pradesh state, India, Asia
African elephant (Loxodonta africana), Chobe River, Chobe National Park, Botswana, Africa
Bull African elephants, Loxodonta africana, Etosha National Park, Namibia, Africa
Eastern grey kangaroo (Macropus giganteus) on beach, Murramarang National Park, New South Wales, Australia, Pacific
White-fronted bee-eaters, Merops bullockoides, Chobe National Park, Chobe River, Botswana, Africa
Elephant (Loxodonta africana), Addo Elephant National Park, South Africa, Africa
Crimson rosella (juvenile), Yarra Ranges National Park, Victoria, Australia, Pacific
Manta ray at Manta Alley in Komodo National Park, Indonesia.
Guanaco (Lama guanicoe), Patagonia National Park, Chacabuco Valley, Aysen Region, Patagonia, Chile, South America
Eastern grey kangaroos, Geehi, Kosciuszko National Park, New South Wales, Australia, Pacific
Eastern grey kangaroos, Geehi, Kosciuszko National Park, New South Wales, Australia, Pacific
African elephant bull (Loxodonta africana), Kruger National Park, Mpumalanga, South Africa, Africa
Leopard (mountain) tortoise, Geochelone pardalis, in Namaqua National Park, Northern Cape, South Africa, Africa
Hippopotamus (Hippopotamus amphibius), Busanga Plains, Kafue National Park, Zambia, Africa
Cape mountain zebra, Equus zebra zebra, Mountain Zebra National Park, Eastern Cape, South Africa, Africa
Female white necked Jacobin (Florisuga Mellivora), a type of hummingbird, in flight, Manu National Park cloud forest, Peru, South America
Lioness, Panthera leo, Kruger National Park, South Africa, Africa
Male gerenuk (Litocranius walleri) feeding, Samburu National Reserve, Kenya, East Africa, Africa
Reticulated giraffe (Giraffa camelopardalis reticulata) feeding, Samburu National Reserve, Kenya, East Africa, Africa
Stag Sambar deer (Rusa unicolor) in the forest, Bandhavgarh National Park, Madhya Pradesh, India, Asia
Baby Masai giraffe (Giraffa camelopardalis tippelskirchi) nursing, Masai Mara National Reserve, Kenya, East Africa, Africa
Female Greater Kudu (Tragelaphus strepsiceros), Addo Elephant National Park, South Africa, Africa
Detail of an encrusting sponge growing on a reef in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.
A bigfin reef squid (Sepioteuthis lessoniana) hovers in nighttime waters off the coast of Komodo Island in Komodo National Park, Indonesia.
An unidentified moray eel (Gymnothorax sp.) swims over a sandy seafloor in Komodo National Park, Indonesia.
A snowflake moray eel (Echidna nebulosa) peeks out from a dark hole on a reef in Komodo National Park, Indonesia.
Profile of American Bison (Bison Bison) in the snow in the Badlands, Badlands National Park, South Dakota, United States of America, North America
African savanna hare (Lepus victoriae), hiding in vegetation in Serengeti National Park, Tanzania, East Africa, Africa
African elephant (Loxodonta africana) at waterhole, Nxai Pan National Park, Botswana, Africa
African bush elephants (Loxodonta africana), taking a dust bath, Tarangire National Park, Tanzania, East Africa, Africa
Snow covered bison (Bison bison), Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
American alligator (Alligator mississippiensis), at rest beside the Anhinga Trail, Everglades National Park, Florida, United States of America, North America
Chimpanzee (Pan troglodytes), Gombe Stream National Park, Lake Tanganyika, Tanzania, East Africa, Africa
Baby Cape ground squirrel (Xerus inauris), Kgalagadi Transfrontier Park, encompassing the former Kalahari Gemsbok National Park, South Africa, Africa
Cape mountain zebra (Equus zebra zebra) mare and foal, Mountain Zebra National Park, South Africa, Africa
Karoo robin (Karoo scrub-robin) (Cercotrichas coryphoeus), Mountain Zebra National Park, South Africa, Africa
Red fox (Vulpes vulpes) (Vulpes fulva) vixen and kit in the fog, Yellowstone National Park, Wyoming, United States of America, North America
Yellow-bellied marmot (yellowbelly marmot) (Marmota flaviventris), Camp Hale, White River National Forest, Colorado, United States of America, North America
Whitetail deer (Odocoileus virginianus) fawn, Devil's Tower National Monument, Wyoming, United States of America, North America
River otter (Lontra canadensis), standing on ice, with reflection, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America