So anyway my favourite CATS fanfic right now is To Be Blind When You're Born. It's ongoing, updates about every two weeks or so, and it features cats who act like cats, and it's about Mistoffelees moving into London and and, uh, growing up and meeting cats? Actually just have the AO3 blurb Spoiler: Summary as written by the author London, February 1939 - and an inquisitive black cat is learning how to grow up. It starts with a pair of tiger-striped rogues with identical grins breaking into his humans' house. Then it's a whole new world to discover, full of fascinating cats who all have a little magic and a little wisdom of their own. The world is changing - the humans are acting strangely, and there are very strange rumours about - but for now, there's a junkyard full of cats, and a city full of dustbins, and a sky full of stars. It seems pretty setting/period accurate and I'm really liking how the characters are written. Author seems like a cool lady.