This is more interesting than another Obama speech.

The macaques have previously been observed grooming the deer or riding them in a playful manner.

The curious behaviour is outlined in a study published in the journal Primates.

The monkey seemed to be a low-status male, who guarded his “love interests” by chasing away other male monkeys who came near.

Co-author Alexandre Bonnefoy commented: “The male mounted the deer and displayed some copulation behaviours, which included about 15 sexual movements over a period of 10 seconds, before dismounting.”