Lately Remi has started barking excessively when we play with his soccer ball or jolly ball. He will bark constantly until we kick the ball, and then whine while he chases it. It is a high pitched bark, and it sets off our other dog and the neighbors dogs. It's like he's frustrated because we aren't going fast enough. He looks like he wants to bite us (jumps towards us, body slams us) but he doesn't actually try. I've tried turning away until he stops, but as soon as I turn back around he barks again, or he just wont stop so I can't turn back around at all. I've put the ball away and he just barks and than grabs another toy. But as soon as I pull the ball back out he goes nuts. What should I do?