Craftland.org

It is a Moa that can be Hatched by using a Ender dragon Egg in an incubator it got a 50/50 chance of Success. This Baby Moa Eats 6 Dragon souls to Grow to a Adult Size and Tamed. When you Saddle this Moa you can Ride it and it will have 3 Jump bars and if u left click something while riding it the Moa shoots a Ender pearl out of its mouth sending you to that location. When a Monster Looks at your Ender Moa the Moa turns aggressive against the Monster and attacks, If the Moa happens to die it will turn into a Dragon Egg again. There should be a way to toggle if your Ender Moa targets Monsters or not.

Love this idea, finally gives a use to dragon eggs.

Maybe it could hatch a Phoenix instead? It could shoot fire charges from its mouth when attacking. Also, when phoenixes die, they are reborn, which would fit in well with the returning to egg.

Or there could be a 50/50 chance to actually hatch an animal (like you said), and out of that 50, a 50/50/ chance to hatch either an Ender Moa or a Phoenix.

They could both be shaped like moas, just different textures/ abilities.

I like your idea Would be really cool to give them ender dragon eggs a use I hope they would jump 5 blocks high just so they would be worth money