Local Breeder, 7 pups 6 normal ( all dog agressive people passive) 1st litter..2nd breeding 8 pups 5 males 3 females , 6 good dogs 1 questionable dog 1 very bad dog..again the pick of the litter again over 120lbs at 10.5 months ( no other dog in either litter hit 115lbs..) Breeder stopped this breeding after he saw both dogs.Both bad dogs were more brindle the rest were mostly white to all white He was at U of penn owner called me for help..difference is he also dog agressive, not neutered and he had at the time had him tested for everything I had plus some other tests. I did have his bloodpressure checked as well as a tyroid check hes was there overnite for 3 days at a time for a total of 4 times. He had a amazing metabolism..would not overeat. ( or eat from strangers).his frame was huge and he had zero fat..and could run all day. The second bad dog from what I was told did the same as mine he went off like a light switch with no warning bark or growl and had injured the breeder , the owner and some vet techs, I lost contact with him after he bit the owner for the 2nd time.I assume they put him down also..I know the breeder was wary enough after he got bit at 7 months to have both parents tested and to sell the bitch so he would never have a mistake litter. I feel bad that I did not let U of Penn examine him when I put him down, I fiqured we both had suffered enough and just buried him in his favorite spot in yard.