You have an interesting perspective on the role of "true" bird dogs. I've had the good fortune to be owned by a few good Labs over the years and can tell you that although they are bred to be "birds dogs", they most assuredly posess the aptitude and desire to be used to hunt/track virtually anything, including "fur", without it effecting their usefulness as a bird dog or "test dog". Incidently, on the way to earning their titles, my Labs have TAUGHT ME that the word "NO!" is infinitely more effective than a shock collar...and requires fewer batteries too.
Respectfully,
Labs