Sebastian Kennerknecht / African Elephant (Loxodonta africana) bulls fighting, Kruger National Park, South Africa

Sebastian Kennerknecht / South African Giraffe (Giraffa giraffa giraffa) juvenile at sunset, Greater Makalali Private Game Reserve, South Africa

Sebastian Kennerknecht / Leopard (Panthera pardus) female feeding on sub-adult male Impala (Aepyceros melampus) prey in tree, Greater Makalali Private Game Reserve, South Africa

Sebastian Kennerknecht / Harbor Seal (Phoca vitulina) pup, Elkhorn Slough, Monterey Bay, California

Sebastian Kennerknecht / Harbor Seal (Phoca vitulina) pup, Elkhorn Slough, Monterey Bay, California

Sebastian Kennerknecht / American Black Vulture (Coragyps atratus) flying near skyscrapers, Ancon Hill, Panama City, Panama

Sebastian Kennerknecht / Hairy Water Lily (Nymphaea pubescens) flower, Diyasaru Park, Colombo, Sri Lanka

Sebastian Kennerknecht / American Bison (Bison bison) herd grazing in winter, Gardiner, Yellowstone National Park, Montana

Sebastian Kennerknecht / American Bison (Bison bison) herd grazing in winter, Gardiner, Yellowstone National Park, Montana

Sebastian Kennerknecht / American Bison (Bison bison) bull browsing in winter, Yellowstone National Park, Wyoming

Sebastian Kennerknecht / American Bison (Bison bison) female cleaning nose with tongue, Yellowstone National Park, Wyoming

Sebastian Kennerknecht / American Bison (Bison bison) female in winter, Yellowstone National Park, Wyoming

Sebastian Kennerknecht / American Bison (Bison bison) female covered with frost in winter, Yellowstone National Park, Montana

Sebastian Kennerknecht / American Bison (Bison bison) female in snow, Riding Mountain National Park, Manitoba, Canada

Sebastian Kennerknecht / Snow Leopard (Panthera uncia) wild female, wet after having crossed river, in mountain valley, Uchkul River, Sarychat-Ertash Strict Nature Reserve, Tien Shan Mountains, eastern Kyrgyzstan

Sebastian Kennerknecht / Snowy Plover (Charadrius nivosus) biologist, Ben Pearl, picking up chick from mud flat in salt pond, Eden Landing Ecological Reserve, Union City, Bay Area, California

Sebastian Kennerknecht / Agricultural land surrounded by natural habitat, Santa Cruz Mountains, Monterey Bay, California

Sebastian Kennerknecht / Mountain Lion (Puma concolor) biologist, Paul Houghtaling, using telemetry to track mother and cubs near houses, Santa Cruz Puma Project, Santa Cruz, Monterey Bay, California

Sebastian Kennerknecht / Atlantic Puffin (Fratercula arctica) at nest burrow, Skomer Island National Nature Reserve, Skomer Island, Pembrokeshire, Wales, United Kingdom

Sebastian Kennerknecht / Silvered Leaf Monkey (Trachypithecus cristatus) mother and young, Sabah, Borneo, Malaysia

Sebastian Kennerknecht / Sunda Clouded Leopard (Neofelis diardi) male with cataract in his right eye in lowland rainforest, Tawau Hills Park, Sabah, Borneo, Malaysia

Sebastian Kennerknecht / Marbled Cat (Pardofelis marmorata) in lowland rainforest, Tawau Hills Park, Sabah, Borneo, Malaysia

Sebastian Kennerknecht / Coastline at dusk, Shark Fin Cove, Davenport, California

Sebastian Kennerknecht / Common Goldeneye (Bucephala clangula) male in breeding plumage on pond, Santa Cruz, Monterey Bay, California

Sebastian Kennerknecht / Ring-necked Duck (Aythya collaris) drake in breeding plumage calling, Santa Cruz, Monterey Bay, California

Sebastian Kennerknecht / Burrowing Owl (Athene cunicularia) at burrow, Berkeley, San Francisco Bay, California

Sebastian Kennerknecht / Sea Otter (Enhydra lutris), Elkhorn Slough, Monterey Bay, California

Sebastian Kennerknecht / Bobcat (Lynx rufus) female walking, Santa Cruz, Monterey Bay, California

Sebastian Kennerknecht / Bald Eagle (Haliaeetus leucocephalus) at sunrise, Lower Klamath National Wildlife Refuge, California

Sebastian Kennerknecht / California Tiger Salamander (Ambystoma californiense), Monterey Bay, California

Sebastian Kennerknecht / California Tiger Salamander (Ambystoma californiense), Monterey Bay, California

Sebastian Kennerknecht / Snowy Plover (Charadrius nivosus) in winter plumage on beach, Point Reyes National Seashore, California

Sebastian Kennerknecht / White Tern (Gygis alba) flying over beach, Midway Atoll, Hawaiian Leeward Islands, Hawaii

Sebastian Kennerknecht / White Tern (Gygis alba) chick, Midway Atoll, Hawaiian Leeward Islands, Hawaii

Sebastian Kennerknecht / San Francisco Garter Snake (Thamnophis sirtalis tetrataenia) on pond vegetation, Pescadero, California

Sebastian Kennerknecht / Knysna Turaco (Tauraco corythaix) in fynbos, Kaapsehoop, South Africa

Sebastian Kennerknecht / Pine (Pinus sp) tree plantation with remnant forest, Kaapsehoop, South Africa

Sebastian Kennerknecht / Spotted Hyena (Crocuta crocuta) five month old male pup with mother, Kruger National Park, South Africa

Sebastian Kennerknecht / Spotted Hyena (Crocuta crocuta) female, Kruger National Park, South Africa

Sebastian Kennerknecht / Spotted Hyena (Crocuta crocuta) female, Kruger National Park, South Africa

Sebastian Kennerknecht / Spotted Hyena (Crocuta crocuta) five month old male pup in den, Kruger National Park, South Africa

Sebastian Kennerknecht / African Elephant (Loxodonta africana) female crossing river, Kruger National Park, South Africa

Sebastian Kennerknecht / African Elephant (Loxodonta africana) bull, Kruger National Park, South Africa

Sebastian Kennerknecht / Burchell's Zebra (Equus burchellii) females nuzzling, Kruger National Park, South Africa

Sebastian Kennerknecht / Impala (Aepyceros melampus) male, Kruger National Park, South Africa

Sebastian Kennerknecht / South African Giraffe (Giraffa giraffa giraffa) calf, Kruger National Park, South Africa

Sebastian Kennerknecht / South African Giraffe (Giraffa giraffa giraffa) male browsing on Acacia (Acacia sp) tree at sunset, Greater Makalali Private Game Reserve, South Africa

Sebastian Kennerknecht / South African Giraffe (Giraffa giraffa giraffa) male at reserve fence, Greater Makalali Private Game Reserve, South Africa

Sebastian Kennerknecht / African Lion (Panthera leo) female, Greater Makalali Private Game Reserve, South Africa

Sebastian Kennerknecht / Current swirling river and Sioma Falls, Zambezi River, western Zambia

Sebastian Kennerknecht / Serval (Leptailurus serval) at night, Kafue National Park, Zambia

Sebastian Kennerknecht / Miombo woodland along Kafue River, Kafue National Park, Zambia

Sebastian Kennerknecht / African Lion (Panthera leo) four month old cub, Kafue National Park, Zambia

Sebastian Kennerknecht / African Elephant (Loxodonta africana) breeding herd in savanna, Kafue National Park, Zambia

Sebastian Kennerknecht / Harbor Seal (Phoca vitulina) pup on shore, Elkhorn Slough, Monterey Bay, California

Sebastian Kennerknecht / Sea Otter (Enhydra lutris) female grooming, Elkhorn Slough, Monterey Bay, California

Sebastian Kennerknecht / Sea Otter (Enhydra lutris) mother giving pup Fat Inkeeper Worm (Urechis unicinctus) prey to feed on, Elkhorn Slough, Monterey Bay, California

Sebastian Kennerknecht / Broad-billed Motmot (Electron platyrhynchum), Panama Rainforest Discovery Center, Gamboa, Panama

Sebastian Kennerknecht / Semi-deciduous tropical moist rainforest mid-story, Panama Rainforest Discovery Center, Gamboa, Panama

Sebastian Kennerknecht / Semi-deciduous tropical moist rainforest mid-story, Panama Rainforest Discovery Center, Gamboa, Panama

Sebastian Kennerknecht / Northern Tamandua (Tamandua mexicana) in tree, Pipeline Road, Gamboa, Panama

Sebastian Kennerknecht / Blue-chested Hummingbird (Amazilia amabilis) sub-adult male, Panama Rainforest Discovery Center, Gamboa, Panama

Sebastian Kennerknecht / Leaf, Metropolitan Natural Park, Panama City, Panama

Sebastian Kennerknecht / Creek flowing through tropical rainforest, Cocobolo Nature Reserve, Mamoni Valley, Panama

Sebastian Kennerknecht / Creek flowing through tropical rainforest, Cocobolo Nature Reserve, Mamoni Valley, Panama

Sebastian Kennerknecht / River flowing through semi-deciduous tropical moist rainforest, Cocobolo Nature Reserve, Mamoni Valley, Panama

Sebastian Kennerknecht / Rainfall in semi-deciduous tropical moist rainforest, Mamoni Valley, Panama

Sebastian Kennerknecht / Excavator in urban wetland, Diyasaru Park, Colombo, Sri Lanka

Sebastian Kennerknecht / Fishing Cat (Prionailurus viverrinus) male running over bridge in urban wetland at night, Diyasaru Park, Colombo, Sri Lanka

Sebastian Kennerknecht / Indian Crested Porcupine (Hystrix indica) near house at night, Colombo, Sri Lanka

Sebastian Kennerknecht / Hairy Water Lily (Nymphaea pubescens) flower, Diyasaru Park, Colombo, Sri Lanka

Sebastian Kennerknecht / Floating Watermoss (Salvinia natans), an invasive species, Diyasaru Park, Colombo, Sri Lanka

Sebastian Kennerknecht / Yellow Bittern (Ixobrychus sinensis) sub-adult male foraging in wetland, Diyasaru Park, Colombo, Sri Lanka

Sebastian Kennerknecht / Pheasant-tailed Jacana (Hydrophasianus chirurgus) flying in breeding plumage, Diyasaru Park, Colombo, Sri Lanka

Sebastian Kennerknecht / White-throated Kingfisher (Halcyon smyrnensis), Diyasaru Park, Colombo, Sri Lanka

Sebastian Kennerknecht / White-throated Kingfisher (Halcyon smyrnensis) with frog prey, Diyasaru Park, Colombo, Sri Lanka

Sebastian Kennerknecht / Grey-headed Swamphen (Porphyrio poliocephalus) female, Diyasaru Park, Colombo, Sri Lanka

Sebastian Kennerknecht / American Elk (Cervus elaphus nelsoni) bull grazing in winter, Gardiner, Yellowstone National Park, Montana

Sebastian Kennerknecht / Bighorn Sheep (Ovis canadensis) ram digging up shrub in winter, Lamar Valley, Yellowstone National Park, Wyoming

Sebastian Kennerknecht / American Bison (Bison bison) female in winter, Gardiner, Yellowstone National Park, Montana

Sebastian Kennerknecht / Bighorn Sheep (Ovis canadensis) ram browsing in winter, Lamar Valley, Yellowstone National Park, Wyoming

Sebastian Kennerknecht / Bighorn Sheep (Ovis canadensis) ram in winter, Lamar Valley, Yellowstone National Park, Wyoming

Sebastian Kennerknecht / Pronghorn Antelope (Antilocapra americana) female in city in winter, Gardiner, Yellowstone National Park, Montana

Sebastian Kennerknecht / Coyote (Canis latrans) pack in territorial howl in winter, Lamar Valley, Yellowstone National Park, Wyoming

Sebastian Kennerknecht / Coyote (Canis latrans) pack in territorial howl in winter, Lamar Valley, Yellowstone National Park, Wyoming

Sebastian Kennerknecht / American Bison (Bison bison) female in winter, Yellowstone National Park, Wyoming

Sebastian Kennerknecht / American Bison (Bison bison) female in winter, Yellowstone National Park, Wyoming

Sebastian Kennerknecht / Dead trees near terraced geothermal hot spring in winter, Mammoth Hot Springs, Yellowstone National Park, Wyoming

Sebastian Kennerknecht / Dead trees near terraced geothermal hot spring in winter, Mammoth Hot Springs, Yellowstone National Park, Wyoming

Sebastian Kennerknecht / Lodgepole Pine (Pinus contorta) trees in winter, Mammoth Hot Springs, Yellowstone National Park, Wyoming

Sebastian Kennerknecht / Tree at geothermal hot spring in winter, Mammoth Hot Springs, Yellowstone National Park, Wyoming

Sebastian Kennerknecht / Snowy Plover (Charadrius nivosus) nest in restored salt pond with shells laid by biologists to increase camouflage possibilities for adults, Eden Landing Ecological Reserve, Union City, Bay Area, Cali...

Sebastian Kennerknecht / Snowy Plover (Charadrius nivosus) biologist, Karine Tokatlian, holding chick during banding, Eden Landing Ecological Reserve, Union City, Bay Area, California

Sebastian Kennerknecht / Leopard (Panthera pardus) biologist, Jake Overton, collecing scat, Kafue National Park, Zambia

Sebastian Kennerknecht / Leopard (Panthera pardus) female at scent-marking spray-tree at night, Kafue National Park, Zambia

Sebastian Kennerknecht / African Lion (Panthera leo) six year old male in savanna, Kafue National Park, Zambia