I love Virtual Pet Sites and I recently started playing at a new Site called Kuepets... what keeps me going back is the friendly atmosphere there where you most times can't find on other Pet Sites, staff listens to ideas of players and incorporates it into the site; not to mention the Games, Trivia, Quests, Missions, Adopt and Caring for Pets (up to 8 of them I believe), making Points isn't too hard of a struggle either, collecting Trophies and Hidden Avatars, and Your Pet levels and stats increase as you Battle, there's also many Collectibles settled in to their own categories and so much more!!!!
so if you would like to check it out for yourself the link is...
http://www.kuepets.org/?game=1&referer=anadora 