I just saw an episode of Mad About You that I've never seen before. It's a movie by Mabel Buchman (titled "Stabbing Bob"), documenting her childhood and her parents' relationship. In it, Murray has sired puppies. And Teenage Mabel is played by Cara Delizia. Grownup Mabel is played by Janeanne Garafello.
*deeply loves the idea of Cara Delizia growing up to be Janeane Garofalo*