A chimpanzee has been filmed masturbating using a plastic bottle as a sex toy which scientists say is a world-first capture of wild animals using human objects for pleasure.
The observation was made by two researchers – Matthew McLennan and Kim van Dijk – who studied Araali, a sexually-mature wild chimpanzee in Bulindi, Uganda, in 2018.
But experts say Araali’s behavior has never been seen before.
In the video found in their published paper, Araali rests under the shades of the bush and picks up a white empty plastic bottle, which is believed to be a discarded herbicide bottle used by local farmers.
The chimpanzee is then seen inserting his penis into the opening of the bottle and “copulating” with it against a branch of a shrub. Araali thrusts into the bottle for a few seconds before removing the bottle and inspecting it.
He also sniffs his finger and places his penis into the bottle again.
The researchers said the relaxed open-mouth expression of the primate while making the pelvic thrusting movements into the bottle suggests his masturbatory behaviour was “pleasurable” or “fun”.
Watch the video below.