You can do a lot of things in Far Cry 4. Kick a rhino? Sure. Stampede over your foes on the back of a wild elephant? Totally. Fly like an eagle? Well, yes actually. Kinda. But there are limits. Here's a video of people testing them to see just how far they can go. (Spoiler: knife kill from the top of the sky).
So I guess that means the sky is quite literally the limit. Sorry.
DefendTheHouse put together a video that explores myths about what you can and cannot do in Far Cry 4. Some are crazy (the aforementioned top-of-the-sky knife kill), and others are kinda weird (you can shoot your own molotov cocktail, but not somebody else's). And in case you didn't know, you can definitely put C4 on animals, you monster.
What's the most ridiculous thing you've done in Far Cry 4? Is there anything you've been super disappointed to discover you can't do?