These are shows that have cats as a main theme or cats show up very frequently in these anime.
Anything with a run time of less than 20 minutes, and has 3 or more episodes is on this list. Including DVD/TV specials for longer run-time shows. The list is ordered with stand alone shows first. So, if you're looking to buff your anime numbers...
I rewatch Cromarties almost yearly, never gets old.
List in progress
Not an ordered list except for the top 10