mrtiki.com, and i dont know any other ones
Neopets.
neopets, webkinz, and club penguin are a few. my fav is neopets :)
gaia online club penguin binweevils our world webkinz neopets star doll girls go games zwinky panfu neopets marapets
Neopets is owned by Viacom so Nick and almost everything else. The original creators made TwinSkies.
Look online for a full list of wearable clothing. I can't list them all here. If you go on one of the sites, there should be some clothing that has the word "uni" in it. They can also wear any other type of clothing, except those that have other neopets' names in them.
Neopets, Icepets, Subeta, Aywas, CreatureWorld. See related links below.
some sites have free lookups to use for your neopets page. If you want to make your own, its not very easy. You have to draw something on paint or photoshop and upload it on the internet, then put the web address of the picture in the user description part of neopets. But, you have to put it in this complicated formula for html (its how it links it to your neopets page) type in free neopets user lookups in google and most just have something to copy and paste and put in your user description page, under preferences in the neopets tool bar. I have played on neopets for 5 years off and on. If you have any other questions feel free to neomail me. My neo username is sarahblakeslee_6_6_6
There are a lot of Neopet wearable clothings, too many to list. However, there are some sites that have lists of all Neopet wearable items. If you would like to see one look in related links.
The best way to get secret avatars on neopets is to find a website that lists all of them and shows you how to get them. Sunnyneo and Avatarlog are two good sites. Some avatars take more work to get than others.
in google search neopets petpage.
Toontown, virtual pets world, and marapets. Thats all I can think of virtual pets things.
Some websites like Neopets are :Webkinz.comShiningstars.comBuildabearville.comClubpenguin.comMillsberry.comMarapets.com is closest to Neopets (but IDK ( I don't know ) if there is a website better than Neopets! :D)