They eventually worked out a weird sort of play structure; Minx running after toys, Rory half trying to start a game with Minx but half scared he would be snapped at again, and socially dumbfounded Zippy just following the others around trying to keep in check.
Minx was a bit unsure of her taller companions
Minx confusing the Whippets with her "style"
Minx running, Rory chasing, Zippy... just bumbling along after them.
(This photo kind of reminds me of the famous futurist painting "Dynamism of a Dog on a Leash")