No there is no law that requires genetic testing; some breeder clubs request that their members do it. From my knowledge, there are no known markers for liver shunt, and healthy dogs without the disease can pass it on to the offspring, since it's a recessive trait. Of course, a dog with the disease should never be bred, in my opinion, because they are continuing to pass on the recessive trait. There is lots of research going on in this area, and hopefully in the not too distant future we will know more. I'm glad you e-mailed the breeder. She should be informed and the dogs that produced the puppy should be pulled out of her program. Good breeders offer a guarantee against this type of genetic illness. I'm so sorry this happened to you. I hope you will do a review of this breeder if she doesn't help you resolve the situation. Others need to be warned of her. If she's a byb, she'll probably do nothing, and will continue to breed the dogs.
