Just my take from my chats....
Many old school breeders are willing to sit and talk outside of the ring if your willing to listen. I have spent many an hour on the phone with several different breeders when I was looking for my girl. I have learned a lot, but it definitely opened my eyes to how much I actually didn't know.
I considered breeding faintly until I started researching it further.
Most old school breeders are very skeptical of new folks coming into breed. Breeding seems so easy and fun to bring in our own little pups. However, breeding takes a lot of commitment, money, and dedication. A responsible breeder is going to be willing to take back any pup they produce, regardless of the circumstances. Many have it in their contracts.
Unless you come with a stellar background of breeding, doing health clearances, and wonderful knowledge of the lines most times you will be on a co-ownership. The breeder will co-own your foundation bitch with you. They would have to approve all breedings and testing prior to the actual breeding. Most breeders have the idea that they want to produce a dog from the litter that they would want to keep to put in their lines.
A responsible breeder looks at many indicators. A good one has to know lines. Just because the line is good, it does not mean that that particular dog/ bitch is a good ex. of the standard. Judges determine if your dog/ bitch meets the standard through shows.(why showing is important) Breeders then try to produce the best possible dog based upon the standard. So, one would hope that a dog and a bitch that both conform to the standard ie... have their CH would be a good start... but there is so much more than that.
The first time I met spoke to my breeder she was rattling off generations back of information on the lines... builds, heart clearances, hips, if they are landseer recessive, if they have brown in their lines,cysternia (sp?), etc. She knew the lines so well that she did not have to look anything up. It was amazing. I was speechless.. and that is a rarity for me
Knowing these backgrounds it helps significantly. Since there are no "perfect" dogs/ bitches they know what combination will hopefully produce the better dog. You obviously don't want to breed two dogs with the same fault or a dog with a bad heart murmur/ hips, etc. to propagate that issue and possible intensify its effects in future generations.
Many also look at the working end of it. Newfs are working dogs. So, a breeder who has several dogs with working titles also helps to show that many in their lines can do it all. After all.. newfs by standard are not just a pretty face. For many I have spoken to, they try to breed for a well rounded dog/ bitch whenever possible. Some strived to get working titles towards.. ie a Versatile Newf. Other were primarily into the show aspect of it.
When I mentioned the thought of breeding.. one breeder asked me to think long and hard about breeding. She said with the health problems with these dogs and their sizes, would it be responsible for me to let you just breed a litter on your own that may end up with a litter of bad hips or heart issues and you had to keep those pups all of their life and watch them suffer? Or would it be better of me to watch over you to make sure you try all means to avoid an experience like that? When I thought about what she was saying.... that one brought it home for me.
So, a BYB breeds to make money only.... the mentality .. that Dog A and Dog B are pretty cute.. I think they would produce beautiful pups that I can sell. You may get lucky and get a healthy dog with a luck of a draw.
A responsible breeder does all they possibly can to make a health dog that conforms to the standard of "What is a Newfoundland." They have to be there through the life of all dogs produced to help and be the "go to" person for any of those pups with any health issues and be willing to take all of the dogs back if a problem would arise. That is a pretty big feat.
Working with a good mentor is going to help you tremendously. Most can't just go and get that knowledge out of books.