When Onyx and Rocko had their only litter we did not cull any of the pups. Even the pup that had a kinked tail and a heart murmur we did not want to cull… we actually did everything we could to keep her alive but it just didn’t work out that way (like it wasn’t meant to be in the first place). Plus we had a family wanting her even though she had a kinked tail and they were planning on having her fixed and never bred. We made sure we had numerous people on our waiting list wanting most of our pups. We had 2 pups left over that people on the waiting list backed out on, so we kept them til they were around 5-6 months old and found them both awesome loving homes like the rest of the litter. Most of the people we sold the pups to wound up fixing them all on their own because they didn’t want to breed.
So overall we would do anything to keep a pup alive and to place them in the right home. If any pup survived having any problems then they would need to be fixed and never bred so there would be no risk of producing more problem pups. We would still give them and opportunity to live a happy life. The only way we would have a pup euthanized is if it had a cleft lip or something that absolutely could not be fixed and was causing more harm/pain than any good. Just wanted to add what we did with our breeding.