Mrs. Tabby is the cousin of King Felis of the Valley of Pussycats in Merryland. Like all the residents of the Valley, she is a cat. She lives at number 16 with her niece Flitter and two gray kittens who belong to Mrs. Mewling.
When Dot Freeland and Tot Thompson visited the Valley, Mrs. Tabby hosted Tot for dinner. (Dot and Tot of Merryland)