A new species of monkey found in the Democratic Republic of the Congo and identified as Lesula (Cercopithecus lomamiensis) is seen in this undated photograph from an article published September 12, 2012 in the science journal PLOS One. The monkey was first seen in 2007 by researchers John and Terese Hart of the Peabody Museum of Natural History at Yale Research Project.
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Santisuk (peace in Thai language), a five-year-old pig-tailed macaque monkey, wears a police shirt as he rides atop a patrolling vehicle in Saiburi district in Yala province in southern Thailand April 1, 2010. The monkey, who was found injured and adopted by local policemen, goes dressed in uniform on patrol every day to help improve force's image and relations with population in troubled predominantly Muslim province.
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Two baboons hold their one-month-old baby at a zoo in Yaduda, Jordan, December 15, 2011.
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A trained monkey looks back while sitting on a can next to his owner as they wait for customers to perform to in a park in Islamabad, Pakistan, July 11, 2012.
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Amr Abdallah Dalsh/Reuters
A monkey, which is known as 'Mono' in Equatorial Guinea, sticks out its tongue on a farm beside the Atlantic beach in Bata January 31, 2012.
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Rajesh Kumar Singh/AP
A Rhesus macaque monkey holds a Bharatiya Janata Party or BJP flag in Faizabad, India, Feb. 5, 2012.
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A Langur monkey drinks water while sitting on a road fence outside Talkatora stadium, one of the venues for the Commonwealth Games, in New Delhi September 29, 2010. Authorities turned to rented langurs to thwart any monkey threat to the Commonwealth Games.
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A couple of monkeys quenches their thirst as another takes a dip on a hot summer afternoon on the outskirts of Jammu, India, May 25, 2012.
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An Iranian technician holds a monkey after reportedly riding an Iranian rocket into space, in Tehran, Iran, Jan. 30, 2013.
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A monkey eats leftovers from a dustbin on a snow covered field near ski resort Gulmarg, from Srinagar, Jan. 19, 2012. Officials say food and fuel supplies to the Kashmir valley have stopped after heavy snowfall blocked the only road to the disputed Himalayan region from India.
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Hiroko Miyoshi/Kyodo News/AP
Japanese monkeys have a bath together in a pond filled with hot spring water at a municipal tropical botanical garden in Hakodate, Hokkaido, northern Japan, on a snowy day, Dec. 15, 2010, with temperature below freezing.
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Mohamed Nureldin Abdallah/Reuters
A monkey is seen near patients awaiting treatment with Howaa Teya (not seen), a spiritual and traditional healer from the Nuba tribes in South Kordofan, at her house in Omdurman March 7, 2013.
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A monkey gestures atop a boy's shoulder during an eviction from Uruguay's square in Asuncion, Paraguay, Jan. 5, 2012.
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A girl walks with her monkey on a promenade along the Arabian Sea in Mumbai, India, March 5, 2012.
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A monkey is seen on a tree at Nairobi's National Park March 11, 2013.