Dorothy remarks in the kitchen that Rose is allergic to cats. However in another flashback episode detailing how the girls met, Blanche meets Rose at the supermarket and Rose has her cat with her.
According to Golden Girls Forever, Jay Thomas says that during rehearsal of one of the pizzeria scenes with Bea and Estelle, he transposed two words by accident, which ended up getting a laugh. Estelle Getty came over to him later and said Bea didn't like ad libs, but since it'd gotten a laugh in rehearsal, he did the same thing on tape night. Bea Arthur was not happy with it then either.