These anime aren't about cats, but they have at least one in it either as a mascot, a character's pet, or a cute kitty just keeps appearing randomly for whatever reason. Basically a list for catlovers who like a little...
Anime with cats and kittens in it. Also includes wildcats, robo-cats, beings that look like cats, and people who turn into cats.
Anime that reference other anime and manga, for either comedy, or as part of the context.
These titles are about cute girls doing cute things! For the most part they have an all girls main cast. Only tv/web series added but you can be sure that any related specials to shows on this list would fit as well.
Anime series that have at least one talking animal in them.