A mixed martial arts fighter received an offer of £370,000 to fight a chimpanzee, with warnings about catastrophic injuries.

Cole Johnson said what began as a joke became an actual bout.

The event appeared to be cancelled after its website was taken down over trust and safety.

It was subsequently labelled as a cryptocurrency hoax.

In a separate case, nine chimpanzees on Ngamba Island selected a baited box on 73 percent of trials when a human pointed, called names, and food-grunted.

By itself, pointing did not produce the same result.