I suspect there is much that could be done that would significantly improve canine health and longevity. Selective breeding has incorporated a lot of recessive genetic problems that could be corrected, and there are many dietary supplements that could add several healthy years before the onset of age related problems.
The end result, in itself a benefit, would be that dogs would remain puppies longer and reach adolescent maturity later. Importantly, dogs have been bred so that they do not reach emotional maturity, as this is an important element of domestication.
Interesting post. I am trying with my 5th Golden to do everything I can to extend his life beyond the 15 or so years I’ve gotten with my 4 previous Goldens. Brushing teeth, cleansing ears, keeping nails clipped, bathing with oatmeal shampoo weekly, taking an exercise run/trot while I bicycle each day. Hearworm/Ivormectin, glucosamine, omega oils, hypoallergenic RX food mixed with cooked grains & veggies. He really likes pot liquor (from cooking greens).
Good grief! Now I feel so guilty about how my previous dogs were treated in the ‘70’s, ‘80’s, and not so much the ‘90’s after Frontline, etc.
I hope they have forgiven me and will happily greet me in heaven.