Anup Shah / Lion cub (Panthera leo), aged 7 months, bullying a younger cub aged 2-3 months. Masai Mara National Reserve, Kenya, September 2009
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Jeff Rotman / Shark expert Neal Watson fighting off a Lemon shark (Negaprion brevirostris) with a shark club, The Bahamas, Caribbean. (model released) Model released.
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Tony Heald / RF- African elephant (Loxodonta africana) young males play fighting, Etosha National Park, Namibia, June. Endangered species. (This image may be licensed either as rights managed or royalty free.)
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Ingo Arndt / African Lion (Panthera leo) juveniles play fighting, Masai Mara National Reserve, Kenya
Katherine Feng / Giant Panda (Ailuropoda melanoleuca) two cubs playing at the China Conservation and Research Center for the Giant Panda, Wolong Nature Reserve, China
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Katherine Feng / Giant Panda (Ailuropoda melanoleuca) three young Pandas playing at the China Conservation and Research Center for the Giant Panda, Wolong Nature Reserve, China
Anup Shah / Male patas monkeys {Erythrocebus patas} wrestling. Laikipia plateau, Kenya.
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Donald M. Jones / Red Fox (Vulpes vulpes) kits playing, Missoula, Montana
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Donald M. Jones / Red Fox (Vulpes vulpes) kits playing, Missoula, Montana
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Donald M. Jones / Red Fox (Vulpes vulpes) kits playing at den, Missoula, Montana
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Donald M. Jones / Red Fox (Vulpes vulpes) kits playing, Missoula, Montana
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Donald M. Jones / Red Fox (Vulpes vulpes) kits playing, Missoula, Montana
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Donald M. Jones / Red Fox (Vulpes vulpes) kits playing, Missoula, Montana
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Donald M. Jones / Black Bear (Ursus americanus) cub pair playing, Jasper National Park, Alberta, Canada. Sequence 2 of 3
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Donald M. Jones / Black Bear (Ursus americanus) cubs playing, Jasper National Park, Alberta, Canada. Sequence 5 of 8
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Donald M. Jones / Black Bear (Ursus americanus) cubs playing, Jasper National Park, Alberta, Canada. Sequence 3 of 8
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Donald M. Jones / Black Bear (Ursus americanus) cubs playing, Jasper National Park, Alberta, Canada. Sequence 2 of 8
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Donald M. Jones / American Badger (Taxidea taxus) mother playing with kit, National Bison Range, Moise, Montana
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Hiroya Minakuchi / Japanese Macaque (Macaca fuscata) young playing in snow, Jigokudani, Japan
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Donald M. Jones / Red Fox (Vulpes vulpes) pups playing, Mission Valley, western Montana
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Ernie Janes / Handler wrestling with a crocodile to entertain tourists at Zoo, Thailand
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Ernie Janes / Handler wrestling with a crocodile to entertain tourists at Zoo, Thailand
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Bryan and Cherry Alexander / Two Nenets men competing in a wrestling competition at a reindeer herders festival in the Yamal. Western Siberia, Russia, February 2009.
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Orsolya Haarberg / Two Eurasian beavers (Castor fiber) wrestling, social behaviour, Telemark, Norway, July
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Bryan and Cherry Alexander / Nenets men watching a round of wrestling during local festival. Yamal, Siberia, Russia, 1993.
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Bryan and Cherry Alexander / Dogon boys wrestling to beat of goatskin drums, a local tradition. Mali, West Africa, 1981.
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Jeff Rotman / Shark expert Neal Watson fighting Lemon Shark (Negaprion brevirostris) The Bahamas, Caribbean. (model released) Model released.
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Jeff Rotman / Shark expert Neal Watson fighting off a Lemon shark (Negaprion brevirostris) The Bahamas, Caribbean. (model released) Model released.
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Jeff Rotman / Shark expert Neal Watson fighting off a Lemon shark (Negaprion brevirostris) The Bahamas, Caribbean. (model released) Model released.
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Jeff Rotman / Diver uses shark billy to fend off Caribbean Reef Shark (Carcharhinus perezi) Bahamas, Caribbean Sea Model released.
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Jeff Rotman / Shark expert Neal Watson fighting off a Lemon shark (Negaprion brevirostris) The Bahamas, Caribbean. (model released) Model released.
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Rob Tilley / Cowboys steer wrestling at Pendleton Roundup, Oregon, USA, September 2009
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Fiona Rogers / Gelada baboon (Theropithecus gelada) infants, one 9-12 months the other less than one month old, play wrestling at base of tree, Simien Mountains National Park, Ethiopia, November
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Fiona Rogers / Gelada baboon (Theropithecus gelada) infants, one 9-12 months, the other less than one month old, play wrestling at base of tree, Simien Mountains National Park, Ethiopia, November
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Tony Heald / RF- Male Giraffes (Giraffa camelopardalis) sparring or necking, Etosha National Park, Namibia. January. (This image may be licensed either as rights managed or royalty free.)
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Wild Wonders of Europe / Lesniewski / Alpine marmots (Marmota marmota) wrestling, Hohe Tauern National Park, Austria, July 2008
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Jane Burton / Jack Dempsey cichlids {Cichlasoma biocellatum} wrestling before spawning, captive, from central america
Eric Baccega / Two juvenile Giant pandas (Ailuropoda melanoleuca) wrestling, Wolong Nature Reserve, China, Captive
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Eric Baccega / Two juvenile Giant pandas (Ailuropoda melanoleuca) wrestling, Wolong Nature Reserve, China, Captive
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Yva Momatiuk & John Eastcott / California Condor (Gymnogyps californianus) group of adults and juveniles, critically endangered, bred in captivity, later released wearing radio transmitters, interacting on rocky cliff in autumn, ne...
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John Cancalosi / Hoary Marmots Wrestling (Marmota caligata)Montana, USA
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John Cancalosi / Hoary Marmots Wrestling (Marmota caligata)Montana, USA
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John Cancalosi / Hoary Marmots Wrestling (Marmota caligata)Montana, USA
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John Cancalosi / Hoary Marmots Wrestling (Marmota caligata)Montana, USA
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Yva Momatiuk & John Eastcott / Grizzly Bear (Ursus arctos horribilis) mother with two 4 month old cubs, Katmai National Park, Alaska
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Yva Momatiuk & John Eastcott / Grizzly Bear (Ursus arctos horribilis) 2 year old female siblings play fighting in river, Katmai National Park, Alaska
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Mark Raycroft / Whippet (Canis familiaris) puppy pair playing
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Doug Perrine / Male Giraffes neck wrestling {Giraffa camelopardalis} Tala Game Reserve, South Africa
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Jane Burton / Domestic Cat {Felis catus} kittens wrestling
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Barry Bland / Steer Wrestling, Wanaka Rodeo, Wanaka, New Zealand.
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Barry Bland / Steer Wrestling, Wanaka Rodeo, Wanaka, New Zealand.
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Mark Taylor / Pair of Hoary Marmots (Marmota caligata) 'wrestling' North America.
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Gerry Ellis / African Elephant (Loxodonta africana) orphans called Natumi and Idle, wrestling and playing in mud bath, David Sheldrick Wildlife Trust, Tsavo East National Park, Kenya
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Matthias Breiter / Grizzly Bear (Ursus arctos horribilis) yearling cubs playing, Katmai National Park, Alaska
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Thomas Mangelsen / Polar Bear (Ursus maritimus) pair playing, near Churchill, Manitoba, Canada
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Thomas Mangelsen / Polar Bear (Ursus maritimus) pair sparring, near Churchill, Manitoba, Canada
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Mark Moffett / Marauder Ant (Pheidologeton diversus) minor workers pin down Ant (Diacamma sp) intruder on trail
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Michael & Patricia Fogden / Red-legged Tree Frog (Dendropsophus bipunctatus) males hang upside down while fighting, Brazil
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Michael & Patricia Fogden / Strawberry Poison Dart Frog (Oophaga pumilio) males wrestling over territory, rainforest, Costa Rica
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Michael & Patricia Fogden / Strawberry Poison Dart Frog (Oophaga pumilio) males wrestling for territory, rainforest, Costa Rica
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Michael & Patricia Fogden / Strawberry Poison Dart Frog (Oophaga pumilio) males wrestling for territory, rainforest, Costa Rica
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Michael & Patricia Fogden / Strawberry Poison Dart Frog (Oophaga pumilio) males wrestling for territory, rainforest, Costa Rica
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Sumio Harada / Hoary Marmot (Marmota caligata) pair wrestling, Rocky Mountains, North America
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Matthias Breiter / Grizzly Bear (Ursus arctos horribilis) cubs playing, spring, Katmai National Park, Alaska
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Tui De Roy / Marine Iguana (Amblyrhynchus cristatus) two females fighting for nesting space along beach, Cape Hammond, Fernandina Island, Galapagos Islands, Ecuador
Mark Moffett / Jumping Spider (Bavia aericeps) two females fighting, Australia
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Mark Moffett / Strawberry Poison Dart Frog (Oophaga pumilio) dominant male wrestles and pins another male, Bastimentos Island, Bocas del Toro, Panama
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Mark Moffett / Strawberry Poison Dart Frog (Oophaga pumilio) dominant male wrestles with and pins another male, Bastimentos Island, Bocas del Toro, Panama
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Mark Moffett / Strawberry Poison Dart Frog (Oophaga pumilio) dominant male wrestles with submissive male, Bastimentos Island, Bocas del Toro, Panama
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Donald M. Jones / Black Bear (Ursus americanus) cub pair playing, Jasper National Park, Alberta, Canada. Sequence 3 of 3
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Donald M. Jones / Black Bear (Ursus americanus) cub pair playing, Jasper National Park, Alberta, Canada. Sequence 1 of 3
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Donald M. Jones / Black Bear (Ursus americanus) cubs playing, Jasper National Park, Alberta, Canada. Sequence 8 of 8
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Donald M. Jones / Black Bear (Ursus americanus) cubs playing, Jasper National Park, Alberta, Canada. Sequence 7 of 8
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Donald M. Jones / Black Bear (Ursus americanus) cubs playing, Jasper National Park, Alberta, Canada. Sequence 6 of 8
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Donald M. Jones / Black Bear (Ursus americanus) cubs playing, Jasper National Park, Alberta, Canada. Sequence 4 of 8
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Donald M. Jones / Black Bear (Ursus americanus) cubs playing, Jasper National Park, Alberta, Canada. Sequence 1 of 8
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Barry Bland / Steer wrestling, Wanaka Rodeo, New Zealand
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Barry Bland / Steer wrestling, Wanaka Rodeo, New Zealand
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Premaphotos / Cactus / banana fly (Telostylinus sp. near duplicatus) males wrestling in dispute of an egg-laying site attractive to female, in rainforest, Sulawesi
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Mark Moffett / Jumping Spider (Portia fimbriata) females fighting over eggs and nest, such battles often result in maiming or death, Queensland, Australia