Huge cat.
The caption is weird, doesn't make much sense. If it lived under her porch, why did he kill it on top of a mountain? Or did he drag it up there for the pic? If I had a problem cat and knew where it lived, I'd kill it in it's bed, or coming or going from it, not climb a mountain and hunt it. But I know nothing about killing cats.
Sucks that he has to try to explain a bunch of extraneous circumstances to try and convince people why it was OK. It was a legal hunt, leave it at that. You aren't going to convert anyone by trying to convince them it was a problem predator that had to go, why even try? Who cares if the cat was a problem or not? Hunters don't, and neither do non-hunters.