- Marty: A loyal golden retriever who is Frannie's best friend and helps her run the doggy day care.
- Bella: A spirited chihuahua who loves to play and is always up for a challenge.
- Buster: A gentle giant of a Newfoundland who is known for his kind and caring nature.
- Daisy: A shy but sweet beagle who warms up to the other dogs and becomes a valuable member of the pack.
- Mr. Whiskers: A mischievous cat who ends up finding a place in Frannie's doggy day care and brings his unique charm to the group.
- Mrs. Higgins: The elderly owner of the house where Frannie rents a space for her doggy day care. She is kind and supportive of Frannie's endeavor.
- Tina: A young girl who lives next door to Mrs. Higgins and loves to visit Frannie's Doggy Day Care to play with the furry friends.