Talk:Breeding/@comment-81.235.207.19-20121011180357/@comment-5606808-20121011223407

The Bone Dragon can be bred by selecting a Fire Dragon or fire hybrid dragon to mate with an Earth Dragon or earth hybrid dragon at the Breeding Cave/Epic Breeding Island.

Breeding a Fire Dragon with an Earth Dragon can also result in a Lava Dragon.

Taken from http://dragonvale.wikia.com/wiki/Bone_Dragon