I'm so sorry. Kirk is so young, poor guy. On the other hand his age may be the silver lining. He can heal faster after surgery and maybe they can help correct this.

You should call the breeder. Maybe be nice about it to an extent, but in my opinion, those parents shouldn't be bred anymore. If the breeder is a good breeder they should agree. I’m not saying your breeder judgment is/was bad. I’ve referred people to what I thought were reputable breeders and once I found out that I was wrong. Sometimes they can be sneaky and misleading. Or maybe the breeder will do the right thing and get a new breeding pair.

It is very nice and responsible of you to contact the other puppy owners. Their dogs may not be showing any signs of trouble, but maybe there are preventative things that can be done.

Kirk and you are in my thoughts and prayers.