Here are my thoughts, cut for unnecessary wordiness.
Yomiko: She might get a parrot, because if they can learn to talk, maybe they can learn to read, too!
Nenene: Forget it. Michelle, Maggie, and Anita make enough noise and mess.
Nancy: A bunny! Bunnies are cute! And they like sex almost as much as she does! :D
Michelle: A puppy! Until the first time it interrupts her reading, upon which Nenene's next door neighbour will find a puppy on their doorstep.
Maggie: Her paper animals.
Anita: A frog. C'mon, she totally would.
Hisami: A kitty. One that would be content snuggling in her lap while she reads.
Drake: Pitbull. Why? I don't know. But imagine Drake with a pitbull puppy, and tell me that isn't frickin' cute. &hearts
Joker: He has the only pet he wants - the kind that does all his work for him, fetches his tea, and does so in revealing little fetish outfits! :D
Wendy: A kitten, even when Joker said no. She snuck it into the house in her purse and coughed loudly whenever it mewed.
John Woo: A Maggie.