A juvenile long-tailed macaque clings to the back of an adult at the Pra Prang Sam Yot temple before the annual Monkey Buffet Festival in Lopburi, north of Bangkok November 29, 2015. The festival provides food and drinks to the local monkey population, which numbers more than 2,000, to thank them for drawing tourists to the town. Reuters
Hong Kong Ocean Park worker poses with a pygmy marmoset, the world's smallest monkey, sitting on his hand in Hong Kong, China February 2, 2016. The Chinese New Year of the Monkey falls on February 8, 2016. Reuters
A man applies kohl eye makeup to his pet monkey, named "Gulabo" (pinky), before it performs tricks for money along the streets of Karachi, Pakistan.
Folk artist Ma Yueru makes a clay figurine of the "Monkey King" also known as "Sun Wukong" for visitors at a Spring Festival temple fair on the second day of the Chinese Lunar New Year of the Monkey in Beijing, China, February 9, 2016. Reuters
A black cap capuchin monkey plays with some food in its enclosure at the Olmense Zoo in Olmen, Belgium, September 2, 2015. Reuters
A monkey reacts while practicing riding a bicycle during a daily training session at a monkey farm in Baowan village, Xinye county of Chinaís central Henan province, February 2, 2016. Baowan village of Chinaís central Henan province appears to be your average farming community from the surface, but at a closer look, one can hear monkey hoots from every direction. Although no official number exists, villagers say that they have been a breeding ground for both monkeys and monkey trainers for centuries. Picture taken on February 2, 2016. Reuters
A trainer leads his monkeys in costumes ahead of a traditional performance at Baowan village, in Xinye county of Chinaís central Henan province, February 3, 2016. Baowan village of Chinaís central Henan province appears to be your average farming community from the surface, but at a closer look, one can hear monkey hoots from every direction. Although no official number exists, villagers say that they have been a breeding ground for both monkeys and monkey trainers for centuries. Reuters
A performing monkey is seen as folk artist Zhang Zhijiu pets its head after a training session at home at Baowan village, in Xinye county of Chinaís central Henan province, February 3, 2016. Baowan village of Chinaís central Henan province appears to be your average farming community from the surface, but at a closer look, one can hear monkey hoots from every direction. Although no official number exists, villagers say that they have been a breeding ground for both monkeys and monkey trainers for centuries. Reuters
A 15-day-old stump-tailed macaque looks at artificial flowers inside a incubator at a zoo, ahead of the upcoming Chinese Lunar New Year of the Monkey, in Hangzhou, Zhejiang province, February 5, 2016. Reuters
A volunteer holds a baby Red Howler Monkey (Alouatta caraya) at the Hacienda Miraderos forests in the Municipality of Armenia, Antioquia, Colombia, December 14, 2015. Reuters
A Japanese macaque (or so called Snow Monkey) soaks in a hot spring at a valley in Yamanouchi town, Nagano prefecture, Japan, November 30, 2015. Reuters
A long-tailed macaque feeds a juvenile at the Pra Prang Sam Yot temple before the annual Monkey Buffet Festival in Lopburi, north of Bangkok November 29, 2015. The festival provides food and drinks to the local monkey population, which numbers more than 2,000, to thank them for drawing tourists to the town. Reuters
Maomao, a 2-month-old stump-tailed macaque cub, hangs from the edge of a wooden box that serves as her temporary enclosure, at a wild animal park in Hangzhou, Zhejiang province, China.
Long-tailed macaques eat fruits from a plate held by festival organizer Yongyuth Kitwattananusorn during the annual Monkey Buffet Festival at the Pra Prang Sam Yot temple in Lopburi, north of Bangkok, Thailand November 29, 2015. The festival provides food and drinks to the local monkey population, which numbers more than 2,000, to thank them for drawing tourists to the town. Reuters
Sri Lanka's Jehan Mubarak, right, India's Wriddhiman Saha, center, and Ajinkya Rahane watch as a monkey runs past them middle of the ground during the third day of their first test cricket match in Galle August 14, 2015. Reuters
A guereza monkey (Colobus Guereza) holds a newborn baby at Prague Zoo, Czech Republic, August 7, 2015. The guereza monkey baby was born on July 31, according to the zoo. Reuters
One-month-old baby drill monkey Pinto holds on to its mother Kaduna in Munich's zoo Hellabrunn, Germany July 22, 2015. Reuters
A male, light-fur baboon is seen at the Safari Zoo in Ramat Gan, near Tel Aviv, Israel.
A monkey chews ice cream as it bathes in a koi pond at a zoo in Hefei, Anhui province, China.
A resident plays with his 5-month-old pet monkey named "Momoy" at a beach in Tanza Cavite, south of Manila.
A monkey plays at a zoo in Huaibei, Anhui province, China.
A black-tufted marmoset monkey goes about its daily rounds in Santa Teresa district, Rio De Janeiro.
Two brown-headed spider monkeys are pictured at a zoo in Antwerp.
Jimmel, an owl-faced monkey, protects her one-month old baby at a zoo in Antwerp.
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