First of all, let's overlook the fact that it's a pack of hyenas we're talking about: speed, agility, razor-sharp teeth, crushing jaws. Let's overlook that it's just one gorilla loping along the underbrush. Let's take into consideration the awesome psychological warfare that these guys will bring with them.

Their laughter would freak out anyone -- like the incessant squeaking of a hamster wheel in the middle of the night. And they know this. So they'd be running around in the brush laughing, freaking out that gorilla, making it wonder exactly how many of them are there. Gorilla'd be too freaked out even before the first hyena attacked.

Good thing gorillas don't have anything hyenas want. Otherwise, they'd be extinct.