A mixed martial arts fighter was offered £370,000 to fight a chimpanzee, with a stark warning about catastrophic injuries.

Cole Johnson said the initial joke became a real fight.

The event looked to have been called off after its website went offline over trust and safety.

It was subsequently labelled as a crypto hoax.

Separately, nine chimpanzees on Ngamba Island selected a baited box on 73 percent of trials when a human pointed, called names and made food grunts.

Pointing alone did not produce the same result.