Carlisle would have a hamster just cuz
Esme would have a cat or something like that
Rosalie would have a fish you know they die in a week so its not like she would have her hands too full
Emmett would have a bull dog. cant you seethe dog following Emmet around
Alice would have a micro mini maltese cus they are so fun to dress up!
Jasper could have a snake... i ran out of ideas so hes getting a snake!
Edward can have a Golden retriever so they can do out doorsy stuff
Bella... well lets give her a frog cuz maybe she will kiss it, it will turn into a prince, and Edward will be single again!