The idea just came to me when I remembered that a hippogriff is the offspring of a horse and gryphon, so my idea is to have Unicorns and Gryphons able to breed. The chance of the breeding being compatible and actually producing a hippogriff should be pretty rare though. I'm not sure if that would mess up the current breeding system, but it's just an fun idea. :)

I've always wanted to have hybrid breeds on this game, but I think it would be quite bothersome. We'd have to buy/commission art, color the skins, stuff like that. And it probably would be weird to only have one type of hybrid, so either we don't have it or we make a few other ones and then there's the whole art and coloring skins problem all over again.

Otherwise, I like the idea though.

Roc & Unicorn = Pegasus?

Yeah, I don't know. 

The Throdama has many different skins and there are five different variations of them. I don't know if the artwork for them was already made and just now unveiled, but it seems that a hippogriff wouldn't be horribly hard. I've got no idea how it all works though, I'm not a moderator or a staff person.

Please check this thread, point 4: http://beastkeeper.com/thread/4073

Hybrids had been suggested several times already. Art is not a problem, it's just a matter of time. What about inheritance and genetics? Two different species have totally different genes. Could you please describe the inheritance logic that you would like to see in hybrids? How do you suggest to deal with genes that are species-specific (these are all genes except the basic normal/weak/strong; color genes are included, they are species-specific too)? How the new genes should be acquired (of course, new species is not only new skins - it's new genetics and abilities)? What are these new genes? How do they depend on the genetics of parents that can't have these genes physically? 

The idea that jars me the most is that gryphons are already a hybrid species by definition - what's more, they're a hybrid of two existing BK species, the Puma and the Roc. Introducing a hybrid breeding system without addressing that would be hugely inconsistent, but that would mean a complete overhaul of the species - if inventing new hippogriff genetics based on unicorn and gryphon genetics sounds hard, imagine reconciling existing gryphon genes with the puma and the roc. Nightmare. D:

Other than that, however, I do like the hybrid idea. If we follow mammal vs. reptile and herbivore vs. carnivore laws, and set aside alien species like the Symurgh and Throdama, we are left with Dragon x Cockatrice, Puma x Roc, and Unicorn all alone. (Man, I hope we get another herbivore species some day!) Puma x Roc would be a Gryphon, as mentioned before. Gotta set that aside. Considering the cockatrice...it's so fundamentally similar to the dragon. What would a hybrid even look like?

The best I got is some sort of semidragon - retaining the long neck and tail of the dragon while inheriting birdlike qualities from the 'trice, ultimately resembling a swan or maybe a flying serpent. Gryphons could be explained in-universe as having developed ages ago from horses and big cats, perhaps due to some powerful magic, but they're genetically independent of the original species or something. The reptile hybrid could be more like a mule IRL, in between a horse and donkey, bred by Beastlords and unable to reproduce.

Thinking about genetic inheritance is making my head hurt...all I can think is that predefined combinations of unique genes (Fire Gland from dragon mom and Acid Gland from cockatrice dad) might result in some sort of species-specific combo attack, like Acid Shot. Mebbe.

I hadn't even thought about genes to be honest. The species specific genes would be hard to translate over to a hippogriff, ecspecially something like Magic Horn. A gene like determined could still be kept and the beak genes could as well.

As for the colors, I suppose they could just be a mix of it's parents. Like if it's unicorn parent was a white striped and the gryphon parent was a white owl and it got gray and owl, then the horse part could be plain gray and the eagle part could be a gray owl.  

I probably should have thought it all out before posting the suggestion though.