"Not many people know that Einstein was a burly, muscular fellow. But if Einstein tried to get a cat in a carrier, and the cat didn't want to go, you know what would happen to Einstein. He would have to resort to a brute-force solution that has nothing to do with intelligence, and in that matchup the cat could do pretty well for itself."

This seems, actually, like a perfect argument going in the other direction. Every day, millions of people put cats into boxes, despite the cats not being interested. If you offered to pay a normal, reasonably competent person $1,000 to get a reluctant cat in a box, do you really think they simply would not be able to do it? Heck, humans manage to keep tigers in zoos, where millions of people see them every year, with a tiny serious injury rate, even though tigers are aggressive and predatory by default and can trivially overpower humans.