Board Thread:Lore Discussion/@comment-15888551-20130823092654/@comment-10207438-20131101062851

Or it could just be that they heard of 'a person who can devour a dragon to steal their powers' and they thought it more literally, so they would kill dragons and physically eat them hoping to gain their power; hell maybe the snake-like people are just a normal humanoid race of people, but those who ate dragon became more snake-like.

them being related is not a possibility, I think it was said above in this thread, but dragons don't breed, they just are.