Pretty vague question if I'm being honest! Generally I prefer more furry sorts than humans, sexually. And I don't mind the more basic styles like canine, feline, et cetera - compared to overly complicated ones.

Nimbats are pretty cute and I've seen a lot of them lately. Seen a lot of Digimon too, though that's more of a mixed bag. Kinda same for Pokemon as well. For my tastes, the cuter/more handsome the better, usually. Of course that's very subjective... and there's always exceptions.