An amazing video has emerged of a man appearing to communicate with a howler monkey in the jungle.
See also: Cheeky monkey steals girl's sunglasses
See also: Monkey tries to bite tourist at wildlife sanctuary
The footage, shot earlier this year in Bocas del Toro, Panama, captures the monkey and the man howling back and forth.
The filmer explained online that "coucou" - meaning "hello" in French - is his vocal signature which allows the monkeys to recognise him.