We originally wanted 1 boxer. The mother of the litter sat on the puppy that we had originally selected and broke his front leg. The breeder suggested that we take another pup from the litter. We ended up taking Wyatt, a flashy fawn, and the original pup Doc, flashy brindle. Yes, his leg was broken but we were looking for companion dogs not show dogs. The breeder gave Doc to us free of charge but she wanted the rights of his first breeding. Here is the issue. Wyatt has been a medical nightmare. He has had generalized Dmange, a surface tumor removed from his ear and now he has been diagnosed with pyloric stenosis. He is just over a year old. The breeder is still wanting to breed the sibling. I'm having a problem, in good concience, breeding Doc. While he has appearred healthy so far, I feel that he shouldn't be bred because we don't know if Wyatt's problems are hereditary. I do not want any more puppies being out there and other owners having to live with the chaos that we have had to endur and still endurring over the last year. Any advise?