Good questions Paperaith! I've been curious about these things too. I'm hoping to maybe get into breeding in 3-4 years or so and have been checking out all the new breeding forum threads. Building on the line breeding question, is it common to check a snake's line before breeding? I know with my mom when she was breeding Chihuahuas that she wouldn't breed two together if they were closely related (common link back as close as great grandparents, I think is what it was), other than dinkering is that common or normal with snakes too?