Pokemon Based on Pets
Your current pets are transformed into pokemon based on species ect.
Dogs are based on shape and size
I.E. Skinny and or aggressive breeds are Houndoom, standard shaped are Arcanine while toy dogs would be the prevos
Cats are based on age (evolved / nonevolved) and general attitude or shape
Everything else like lizards, fish, snakes ect. are based on species and such

I would have:
2 Snubbulls (Puggles)
1 Persian
1 Delcatty
and a Gyarados (gar)