Tinies in Second Life
There's a class of avatars in Second Life called tinies (pulral of tiny). They are anthropomorphic animal avatars that are tiny, typically no taller than a man's knee. There's a whole world dedicated to tinies, including all sort of shapes based on different animals or even anime mechas, and many whole sims, dedicated to tines, and attires, animation overides, postures, all specifically designed for tinies.
Try Xah Tele-Dasher!