Just a quick note on this, it's not entirely appropriate to blame selective breeding "in general" for those issues. Quite often those issues come from specific

Just a quick note on this, it's not entirely appropriate to blame selective breeding "in general" for those issues. Quite often those issues come from specific selective breeding practises designed to make the dogs more "fashionable" by breeding specific aesthetic attributes over healthy dogs. That being said, there is an enormous community of extremely passionate breeders around the world who are absolutely dedicated to breeding HEALTHIER dogs, especially in breeds that are known to have issues due to poor breeding. We have a Boston Terrier we got from one such breeder after spending over two years looking for someone we trusted to do the process right, and we are so happy we did. Not only do we have an amazing pet, but we know we are activity contributing to the process of improving the overall health of the breed, even though it did cost us more to do. A few things to look for in order to pick a "good" breeder. 1. How many litters do each of their female dogs have over their lives. If a breeder is expecting them to produce more than two (three at the most) litters, that's a red flag. 2. Do the mums deliver naturally, or via C-section. We only learned through extensive research that some breeds (often including Boston's) almost all have to give birth via C-section because they've been so extremely bread. We specifically looked for a breeder who's dogs a born naturally. If the pups are so extreme in your they've been bread that the mum can't get them out naturally... Something has gone too far. 3. Is the breeder a "purist" when it comes to the breed. Now this is going to be the opposite of what most people expect, but you WANT a breeder who is 1930's levels eugenicist when it comes to their breed. Fundamentally, most of the issues from breeding come about through mongrelisation of the breed. Low quality breeders cross-breed dogs to introduce "cool" or "fashionable" new traits, without caring about the million other genetic inconsistencies they're bringing into the mix at the same time. A great example is with Boston Terriers we learned. The breed spec for them is VERY clear, they have a white base coat with a black or extremely dark brown "tuxedo" style coat covering their lower body and a portion of their front-legs. ANYTHING that has colours other than those three, is a cross-breed for fashion purposes. There is no such thing as an "albino Boston", or a "patterned Boston" etc etc, these are marketing names people came up with for mongrelised versions of the breed which will almost always have major health issues.