Buster the Horse greets Gladys the Cow as his sister, but Gladys protests with a song about how they're different while horses sing about similarities. Maria finds Gladys practicing her role as a cat for a stage production of "Cat on a Hot Tin Roof." Big Bird asks Gordon and Olivia to write permission for a sleepover at Snuffy's cave, and Gordon helps Big Bird pack, confused to find his own name on the list. Sponsors: U, V, 2