Reading "Salve feles" recently, and thinking that this actually meant "Hello cat" -- and not, as I assumed it was intended to, "Hello kitty" -- I began wondering how we could say something like "kitty" in Latin, i.e., a cute, small or young cat, a kitten.
Now, we do have the diminutive catulus. It's a young animal, a whelp. It is not specific to cats, and Lewis & Short give an impressive list of animals it has been used for. By itself, it often stands for a young dog, a puppy. So that does not look like a good fit to me. Smith & Hall suggest catulus felinus for "kitten," but this is hardly a very endearing expression.
With that in mind, are there any suggestions of how I could say "What a sweet kitty," or indeed "Hello Kitty"?
What do you think of felulus (-a)? E.g. Euge, felula quam pulchella! I have not found a single occurrence with Google, but it should be understandable enough.