As far as I can tell, that IS Bailey, playing tug with Fritz. I'm still not convinced she wasn't abducted by aliens and replaced though.
My dog was going crazy with a lack of stimulation. Joe and Fritz came over. My dog not only tolerated Fritz, but they played, muzzle off, for over an hour. My dog played with another dog--with a TOY. Seriously?! I really don't think that's my dog.