As birds are my favorite class of animal in the real world, it follows that some of my favorite villager species in Animal Crossing are types of birds.
The top two are definitely the Ostriches and Penguins, and it's difficult to say which one I like the most. Penguins are my favorite animals in real life and I really like 10 of the 13 Penguin villagers in New Leaf. Meanwhile, I only like 7 of the 10 Ostrich villagers in New Leaf, but I feel like some of the Ostriches really stand out and have a better model and individual designs. While it's really close, I'd currently say that I'd have to give the vote to Ostriches just because of how many cool and unique villagers it features, including but not limited to Flora, Julia, Phoebe, and Sprocket.
Other species that I'm particularly fond of include Bears, Birds, Cats (despite their general lack of noses), Cubs, Lions, Gorillas, and Pigs.
I don't get why so many people dislike the Gorillas other than them just being big and not fitting into a stereotypical definition of "cute". Sure, there are some I'm not too keen on either like Al (though I warmed up to him after he was a starting villager in one of my towns, still had him move out though) and Boyd, but Hans is awesome and I also like Boone, Caesar, Louie, Peewee, Rocket, and Violet.
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My least favorite species of villagers include the Cows, since there are so few and because the only one that's actually unique is Naomi, and Hamsters because I find most of them either disinteresting or downright unpleasant to look at (Flurry's lack of a nose on the flesh colored muzzle is distracting) and the only one I really like to a degree that I'd consider having them in a town would be Soleil.
