Im gonna show this post to my husband, thanks for great information !!
Is there a reason why black horns are preffered?
I know with dogs that you shouldnt mate two merle coated dogs. The resulting litter of puppies has a high chance of containing 'double merles' or 'lethal whites', dogs that have very little or no colour to their coat at all. Double merles are highly likely to suffer from eye or ear deformities (in some cases both) which at the most extreme can result in complete blindness and deafness.
The merle coat is a indication of a gene mutation, so is there a similar health reason for not wanting lighter horns or just that its not how they are supposed to look?