People walk along a street with long-tailed macaques in Lopburi, north of Bangkok November 29, 2015. (Photo by Jorge Silva/Reuters)

An adult chimp plays with a young chimp at Chimp Haven in Keithville, La., Monday, February 18, 2013. One hundred and eleven chimpanzees will be coming from a south Louisiana laboratory to Chimp Haven, the national sanctuary for chimpanzees retired from federal research. (AP Photo/Gerald Herbert)

A Thai veterinarian sterilizes a monkey in a bid to control the birth rate of the monkey population in Hua Hin city, Prachuap Khiri Khan Province, Thailand, 15 July 2017. (Photo by Narong Sangnak/EPA/EFE)

Monkeys eat fruits during the Monkey Buffet Festival, near the Phra Prang Sam Yot temple in Lopburi province, north of Bangkok, Thailand November 27, 2016. (Photo by Chaiwat Subprasom/Reuters)

The pygmy marmoset (Cebuella pygmaea) is a small New World monkey native to rainforests of the western Amazon Basin in South America. It is notable for being the smallest monkey in the world at just over 100 grams (3.5 oz). It is generally found in evergreen and river edge forests and is a gum-feeding specialist

Greetings, sickly monkeys! Planet Nibiru is near already. Confess, parasites! Love you! Yours truly, Avax

Greetings, sickly monkeys! Do you remember about the planet Nibiru?! Confess, parasites! Listen to good music! Love you! Yours truly, Avax

A tiger cub has a short chat with a chimp. (Photo by Ian Tyas/Keystone Features/Getty Images). 27th November 1979