Has it been discovered yet if other animals feel a sense of humor? Because–not to answer my own question, but–I think I have observed that very thing–in dogs.
As I have already said, both of my parents were animal lovers. So I was fortunate to grow up in a house were there always animals–frequently several at a time, in fact. And I notice a weird phenomenon when I get my dogs a treat.
They are watching me intently–naturally, because dogs live to get treats. And then, maybe I will have a minor mishap. Perhaps I will grab the wrong box. Or perhaps I will stumple a little on the way to the treat box. And they wag their tails a little. Why? They all like me, so they are not pleased by my misfortune. In fact, it involves their misfortune to a certain degree to. So clearly it is not something that would make them happy on the face of it. They must think it is funny–right?
BTW, the reason why I chose the general question area over the great debates is because I am hoping someone can cite a recently veternarian study or something.