An MMA fighter received an offer of £370,000 to take on a chimpanzee, with a stark warning about life-changing harm.

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

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

It was later described as a crypto hoax.

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

By itself, pointing had no such effect.