See link posted below. That website allows you to cross breed dogs and cats if you like, however the puppies will look either like their mom or dad- not both. Plus, one of the downers of the site is that you have to pay money to be able to do certain things with your dogs- including breeding.
Chat with our AI personalities
Theres LOTS!-Fishferous (online fish breeding game)-Creature Breeder (breed adorable virtual pets)-Foopets (adopt a realistic virtual pet, play with it, care for it and breed)-Neopets (not exactly breeding, but adopt up to 4 adorable neopets)-Facinity (online fish breeding game)-Howrse (horse equestrian and breeding)-Spore (can't be played directly from the IE or FF but best of these)-Spotty
On Mara Pets you can breed pets to get mini pets!!! Mara Pets is Free, fun, and no download!!! Just click on the link below.
There are many dragon games online. One example is DragonVale, a game about breeding dragons.
Baltoy is genderless, so it must be breed with a ditto. For more info on breeding, go to serebii.net and look under game mechanics.
One is called Wajas it is like a wolf/dog breeding sim game