The species are incompatible and cannot interbreed.
A rhinodillo.
A bearoceros.
A wolfoceros.
A lionoceros.
A rhinodile.
A porcudeeroceros.
A rhinodillophant.
The species are incompatible and cannot interbreed.
No, a horse is Equus caballus, a donkey is Equus asinus, I believe. Donkeys are a different species. Mules are the cross between a male donkey and a female horse, and hinnies are the cross between a male horse and female donkey.
A hedgehorse.
The cross of these two breeds is just a cross until it's registered as foundation stock with the Pintabian horse registry.
A lipizaner x Arabian.