Virtual pet communities. Role-playing games and communities where you dress and play with virtual pets and other creatures.
The Fuzz Academy 
Create your own very adorable fuzzy cadet, chat, write a blog and just have fun!
Moshi Monsters 
The least frightening monsters I've ever seen! You can't really dress the um, but you can choose the colors of your monster.
Creature Breeder
How cute are they? You can't dress the creatures but you can buy stuff for your farm and arrange it, lots of fun!
Neopets
A huge virtual pet site with lots of games and activities!
Virtual Fish Tank
Build a metallic looking fish based on his personality. Registration is optional and not necessary if you just want to use your personal tank.
Pup World
Steer your dog through various tasks. The only dress-up available is color of your puppy and your puppy's collar.
Racing Frogs
Create a frog, name it, train it, and take care of it.
Zetapets
Children-oriented community with tons of things to do, games to play, and places to explore.
GiroPets
Create a pet and do different task to earn money. Dressing up is limited to a few items and certain types of pets.
Grophland
Raise, breed, dress and fight the odd litle Grophs. Lots of dress-up options!
= the very best of the best!
= recommended websites.
= only works in Internet Explorer.
= requires registration.
Virtual pets