Virtual Pet Breeding Games

Wajas

Wajas uses dog and wolf-based creatures. After getting a waja, you can explore caves, play minigames, and find fun accessories to add to your creature. The variety of markings and "mutations" (such as wings, horns, and feathers) make each pet you breed a unique and distinguishable creature!

Khimeros

Khimeros works almost exactly like Wajas. The main difference pet-wise is that instead of having purely wolf and dog-based pets, you breed pets based on a variety of animals. So you can easily have a creature with the front half of a wolf, and the back half of an owl...-like thing. The games to play to earn money and items are more unique than other games on this list. Personally, I'm a big fan of Mahjong!

The Dragon Empire

The Dragon Empire runs much like Wajas and Khimeros, only with dragons. I actually find the games easier and more casual to play, though you have a pretty low limit as to how much you can get per day.

 

 

 

 

Pocket Pumas

As with the above sites, Pocket Pumas allows you to breed virtual pets with a variety of unique and fantasy-like markings and "mutations" (called "evolutions" in this game.). Only now we're doing it with cats. You can have your own pride of big cats, from lions, tigers, and lynxes, and mix and match them to your heart's content! One thing I notice about this game, though, is that it actually Prevents you from "inbreeding" your pets. While that's a great thing to include in this game, I found it to be somewhat frustrating when I spend large amounts of in-game currency on a wide selection of cats, only to find that all but two could be bred*. But I guess that's good if you forget to looking out for that.
(*Note: On July 13TH, 2011, a new "Inbreeding Checker" feature was added, allowing you to check a pet you wish to purchase for inbreeding.)
The games are rather unique as well, using flash-based games instead of browser-based ones. It's too bad you can only earn money through three plays a day...Actually, that might be a good thing, lest I find myself playing them all day!

Aywas

Aywas is one of the more unique breeding pet games. While it was a little confusing the first time I played, I'm getting a pretty good grip on how it's played. First off, unlike most other breeding games, this one is more battle and collection-oriented than breeding-oriented. You have a "Human avatar" that you can buy and collect clothing and other accessories to dress them up in, and you explore the world to fight other creatures. You can also fight other players.
One feature I find unique is that you can "marry" your pets, either two of your own, or yours and another player's. Breeding is a rather difficult thing to accomplish in this game, as it seems that you need to spend a lot of in-game money (much more than you start out with) to get "breeding coins", which are required to produce a baby. And you need to spend much more if you wish to breed two creatures of different species.

Dragon Stable

Dragon Stable seems to work a lot like Neopets, but you can actually breed the dragons you own. You have a world to explore, and games to play. Most of the games are based on luck and chance, but at least some of them let you continue to earn in-game credits, even if you lose. I've only just started this game, so I haven't gotten a chance to breed a dragon yet...Check back in the future for updates!