Lucy and Jasper roughhousing. Lucy does pretty well for an arthritic old lady, whose hip dysplasia is apparently so bad that her xrays could be those of a dog who can't stand up.
Victorious Lucy pins Jasper by his throat. That's Rudy off to the side. He doesn't join in the play fights...he just continually shrieks encouragement at the top of his lungs from the sidelines.