I was in a local mall pet store a few years ago. I was waiting for my baby Cav to be old enough for me to bring home. I wandered in, out of curiosity. They had a Cav there. The dog's markings were not nice, which is really unimportant. The dog was far too small for it's age, again, not too important. But, it was "snapping at flies" that were not there. It had a severe neurological disorder (among other problems). They wanted close to $1,000 for this puppy. You just know that whoever bought the dog would have no clue how sick it was. And that it would probably die, leaving the family devastated, or it would wind up in a shelter. Obviously, even with diligent breeding, genetic problems can occur. But breeders who knowingly or recklessly breed dogs with problems, leave them in tiny crates in unsanitary conditions, don't get them medical attention, etc. should have to deal with cruelty to animals charges. Dogs give unconditional love, they deserve the same back. Just an aside: my dog never stops wagging his tail. I ask him "are you a happy dog" (I know he doesn't literally understand that) and he twirls around and jumps on me and licks my face. I wish for all dogs to be that happy.
Not entirely on topic, but this is a very interesting article for anyone who loves dogs: