I have a 10 week old reverse brindle female. I bought her from a reputable local breeder that gave us bloodline papers for mother and father. I got her because i have a 12 year old fancy boxer and she is the perfect dog but is getting old. I got the female so that when my old girl passes i could breed the pup to replace her. The breeder called the other day to inform me that my pups 2 brothers (there were only 3 in the litter) had dies of heart problems and that the entire litter with another female had died after i got my pup and all died from hear problems. The mother has had pups before and never had this problem so they are confident the the male is passing on a recessive gene. Anyway we have talked to a vet and a couple knowledgeable people and they say that as long as she doesnt have a heart murmur than she will more than likely have a long happy life but since she is carrying the recessive gene we should not breed her. My question is should i expect anything back from the breeder as i bought her at full asking price for a healthy dog that i could breed. I have 5 children with 3 being 5 and under and although she has offered to replace the pup out of ner next litter I cannot take this one from my kids. We all lover her and she is a beautiful dog. I am just dissapointed because I looked long and hard for the reverse brindle and wanted to breed her for myself and some family and friends that love the way she looks. Any advice would be greatly appreciated.