Meet the star students of orangutan school – the unique rehab centre where orphaned apes are taught how to climb trees and survive in the wild without their mum and dad. (Photo by Caters News)

Attendees at Wizard World Comic Con walk through hallways in Chicago, Illinois, United States, August 22, 2015. (Photo by Jim Young/Reuters)

This photo taken on April 25, 2015 shows a pet male monkey named “JK” (R) and his partner “Shaki” (L) eating dinner at a restaurant in Kuala Lumpur. Jamil, a 45-year single Malaysian man, has unusual pets – two macaque monkeys. JK and Shaki, both nine years old, usually ride with Jamil on his motorcycle and they often have dinner together in public restaurants, drawing instant public awe. (Photo by Mohd Rasfan/AFP Photo)

Young couple in BDSM action on the leather sofa. (Photo by Alamy Stock Photo)

Britain's biggest dog, 18 month old great Dane, Freddy seen realxing on the sofa with it's owner Claire Stoneman at their home in Southend-on-Sea, Essex, England. (Photo by Matt Writtle/Barcroft Media)

An eight-year-old St Bernard with the longest canine tongue in the world, measuring 18.58cm (7.31in) in length, as recorded by the Guinness World Records: Amazing Animals, in South Dakota, USA. (Photo by Kevin Scott Ramos/GWR/PA Wire)

A little girl hangs three Siamese kittens on a washing line in a garden in Croydon, London. (Photo by Fox Photos/Getty Images). 14th July 1931