""Fluffy"" is the cat equivalent of Cookie and a member of the Kennel Kittens
Fluffy is brown with a white muzzle, underbelly, and paw tips. She wears a yellow bow on top of her head and a black collar with a Kennel Kittens tag shaped like a cats head.
Fluffy works with the Kennel Kittens at Happy Valley Shelter. She helps kittens and full grown cats find homes.The show shows only three of the cats she found homes for , Mittens, Lily, Spoons (though the Super Secret Pup Club found her home), and an unnamed kitten from "Once a Ralph Always a Ralph".
Since Fluffy is the cat equivalent to Cookie, her personality is similar. She is tough and strong though her appearance and name don't seem to match this.
In "Kennel Kittens Return" it was implied that she and Squirt were in love. Since Lucky and Cookie are in love (as of "When Niblet Met Giblet") and the Kennel Kittens are the Pound Puppies mirror organization, this could mean Ace and Fluffy are in love, too.