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Originally Posted by yorkiekist  I would never breed any dog with an underbite, slight or not. This is a major genetic fault and is passed on to the puppies. JMO |
A bad bite is a recessive trait so if the dog is showing an underbite he is homozygous for a bad bite. Unless you find a gal that is homozygous for a good bite (not easy to do) than half the puppies born to this male will be undershot as well.