Photo: Animal keeper Lesley Kirchner shows female orangutans Conny and Sinta videos of male orangutans in the original experiment conducted at Wilhelma Zoo, Stuttgart, Germany. Photograph: Wilhelma Zoo/Harald Knitter.
The Apenheul Primate Park in Apeldoorn, Netherlands, has just unveiled “Tinder for orangutans,” a four-year experiment to help increase mating in captivity. 11-year-old Samboja…
