Eric Baccega / Young woman from the Bodi tribe displaying elaborate scarification on the skin of her back, Omo Valley, Ethiopia, March 2015.
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Will Burrard-Lucas / Ethiopian wolf (Canis simensis) stretching as it wakes up, Web Valley, Ethiopia.
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MYN / Gil Wizen / Human botfly (Dermatobia hominis), adult and larva. Cayo District, Belize. Composite image. Meetyourneighbours.net project
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MYN / Gil Wizen / Israeli sand cockroach (Heterogamodes hebraica) composite showing ventral and dorsal view of female, Central Coastal Plain, Israel, April. Focus-stacked. meetyourneighbours.net project
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MYN / Gil Wizen / Two-tailed spider (Hersilia caudata) female, Central Coastal Plain, Israel, June. meetyourneighbours.net project
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Alex Hyde / Spider hunting wasp (Pompilidae) Maliau Basin, Sabah, Borneo.
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Ben Cranke / Fin whale (Balaenoptera physalus) surfacing with mountain landscape, Liefdefjorden, Svalbard, Norway. July 2011.
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Jussi Murtosaari / European brown bear (Ursus arctos arctos) scratching its back, northern Finland, June.
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Edwin Giesbers / Jaguar (Panthera onca) cub looking over its mother's back, captive, occurs in Southern and Central America.
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Roger Powell / Cattle egret (Bubulcus ibis) perched on the back of a sheep, with another on the ground, Castro Verde, Alentejo, Portugal, April.
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Danny Green / Adult Sloth Bear (Melursus ursinus) scratching its back against a tree, Bandhavgarh National Park, India, February.
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Laurent Geslin / Great crested grebe (Podiceps cristatus) pair feeding their chicks, which are carried on their backs. Lake Geneva, Geneva, Switzerland