Dock Diving Dogs

The dog breeding "modern" activities?
In the vacuum created by the technology, many breeds of dogs and do not function original. Some have mentioned recently that many races have found a new niche in "modern" activities – agility, obedience tests, work therapy, centrifugal, diving docks, etc. Do you think it is acceptable to breed dogs to excel in these modern activities, despite the fact that it may have nothing to do with the original function of the dog? Example 1: Playing a line of "agility" Border Collie, or "obedience" Belgian Tervuren. Example 2: Crossing the Border Collie and Border Terriers for a "better" dog flyball. Example 3: Breeding dogs with two potential tenants excellent guide dog, even if they are not structurally sound. Example 4: Breeding Dachshunds Dachshund dog to win races, or Chinese Cresteds in order to get their next "World's Ugliest dog "winner." Is there a line to be drawn here somewhere? Or is all this is fine, since dogs perform a function?
First, I would like the breeder to explain why the original features of the breed are not suited to the task? Example 1: For the agility it needs a dog that is smart and fast (among other things) – it sounds like a border collie for me. For obedience, you need a dog that is intelligent, very focused driver – Tervs fit that bill very well. Example 2: – Why? Flybayy – you need fast, the ball centered in dogs – two races of the requirements. The team of jumps in jump height of the shortest member – why try to make a larger border terrier? Example 3: Form follows function. Always, always, and all! A fantastic guide dog is shit, if you can not walk due to hip dysplasia Example 4: You can not breed winners. You breed the best dogs they have, and assess the potential of the offspring. After starting the hard work to maximize this potential. So – no. Until someone can tell me why the validity of one the original race can not fit into his new niche. " And above all – most of these activities (not all but most) have been designed by humans humans so they can have "fun" with your dog.
ECHO Harley Dock Jumping Dog 2006