Those puppies are so cute! I have a friend who owns a blue merle Australian Shepherd who is named Merlin and he was the cutest little roly poly puppy like yours.
That is interesting that Kersey likes them so much. How old was she when you adopted her, did she have a litter of her own before you got her?
Also, what breeds are Graham and Kersey, do either of them have Aussie in them?
I feel bad for Minion, I guess 2 more dogs are a bit much for him, maybe next time you should foster kittens.:)