Jennyanydots

Jennyanydots, the Gumbie Cat is a feline character created by T.S. Eliot for the children's book Old Possum's Book of Practical Cats. She a featured character in the musical Cats, adapted by Andrew Lloyd Webber from Eliot's work. During the day Jenny sits and naps, and appears fat and lazy. During the night, when humans cannot see, she runs the household for the sleeping family, teaching other animals to make crochet projects and perform musical numbers.

Webber's play adds in some elements not indicated in Eliot's text, including identifying Jenny as a member of the Jellicle tribe, and an intense distrust of another cat, Grizabella. Jennyanydots is often portrayed as extremely fat during the day, with the actress removing the fat suit at nightfall to reveal a more athletic form.

Jennyanydots in "The Great White Way"
Jennyanydots the cat was one of the first Webberite casualties of the Sondheim-Webber battle, being devoured by the Sondhead Wolf at the start of the conflict.

Literary comment
Some speculation is necessary to determine the identity of this character, one of many whom the story leaves unnamed to protect copyright. The cat is described only as a "plump puss." Only two felines are specifically connected with fatness in Webber's script. The other one is Bustopher Jones, who is confirmed later in the story to have survived the Wolf attack.