Fifi came from Paris, France with Kira and Kimi. She becomes the Finsters' family pet. Later on, she "marries" Spike, and gives birth to some puppies. She is purple with white hair. One of her puppies is adopted by the Pickles family. The other puppy stayed with his mother.
Fifi is Spike's poodle girlfriend and the Finsters' family pet, who they brought over from Paris, where she and Spike had their first date. Later, they both got married in the Bow Wow Wedding Vows episode, when she also gave birth to a litter of puppies.