Catgirls should be dex/int or wis. Not so much booksmart though, but more primal intelligence. I think dndwiki might have some catgirl templates though, I am sure of it. They have half-shoe afterall.
Razorclaws make fine catgirls. It's just amusing that they totally suck.
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Twostuck, Homestuck RPG: http://www.gamefaqs.com/boards/8-gamefaqs-contests/62168402