A man and a small dog play with a ball, tossing it from one to the other, and occasionally bouncing it off the backdrop.
It's one of the many variety acts filmed during the first forty or so years of cinema. It's quite lively, with a very handsome little dog, and the man appearing to have a good time that would be part of the act, but it doesn't eliminate the possibility that he enjoyed his work. I hope he did.