[dipper]

Chimps are extremely dangerous and as they mature, it gets worse.

Forget using a blade---might as well use one against a rhino.
The owner of this chimp was stabbing it with a butcher knife to stop the attack--didn't work.
According to what I read and heard on the news, he bit the hands off and ATE them.
Many people do not know that chimps eat meat and love it----they eat more than bananas.

The owner NEVER should have called in someone the chimp did not live with.

As far as a firearm, IF you were extremely quick and at the ready AND able to make the first shot a "fatal" shot, you may stand a chance.
Wild animals are WAY faster than we are and close and cause damage very quickly.