I don't have a dog unfortunately because I don't have a yard, but my fiance and I frequently dog-sit for my sister and we love when their dog plays with his kong I think we might be more entertained by it than he is! It takes them a while to figure out that there is food inside, but once they do they don't let up until they get it! I've also seen my parent's dogs play with them, and I'm amused how each dog has a different strategy. Eventually, once they've gotten enough treats out of it they just start to carry the kong around in hopes that a treat will appear inside of it! It's adorable!