These puppies have been very carefully bred to combine the very best & healthiest bloodlines available, they are bred for a better shape of head so not a very round head with bulging incorrectly placed eyes, they are bred for a slightly longer muzzle to aid correct breathing. As An ex veterinary nurse I saw many Bostons operated on for nostril widening & soft pallet adjustment & obviously this was always a risk with anasthetic. Our puppies will not have these problems.Text Us Any Time For More Info And Pics Via ((xxx) xxx-xxx2