For real though, how much do you think a Gorilla can Benchpress? It wouldn’t be hard at all to teach one how to do it. And it would be very easy to convey that we want to know what his max is. Just get a scrawny kid to do it and overact like he’s on the verge of blowing out his pec. And give him a handful of beef jerky.
Then have a ripped dude do it. Make sure the buff dude does some pithy weight the first time and the zookeeper drops off a handful of Beef Jerky. Then he signals for more weight and the prizes get progressively more extravagant. When he gets near the top end and his veins really pop and his striations come to life he gets to have sex with a woman in front of the Gorilla. He’ll figure it out. If anyone thinks that’s animal cruelty I invite you to tour a factory farm.