It can be genetric as well as the ear hair no being trimmed off the ears at an important time in a pup's life. So it can be caused by either.
Some yorkies have can have a genetric trait of a thick skin ear leather and no matter what you do the ears will never stand. These ears are usually large as well.
Also while a pup is teething the ear can dip due to the stress of cutting teeth and then if the hair is not trimmed off during this time can cause the ear to flop. If they are not helped out and ears are always flopped - this ear too can permanetly stay flopped over. This can be for a smaller ear. If the ear stays this way for awhile - say by the time the dog is 1 - the ear will never stand.
I hope this helps. One reason you do not want to breed a large or thicker leather ears. |