If I want a laugh with my dog I just put a bowling ball down on the floor. He insists that anything round is HIS to play with. He grabs it with his front legs and shoves it backwards after trying to bite it.
Otherwise a laser pointer will have him running from one end of the house to the other until he is too tired to fart.
Otherwise a laser pointer will have him running from one end of the house to the other until he is too tired to fart.