I felt dogs are unnatural

I know of that fox thing. When they pick two calm ones to mate, the pups are calm. When they picked two mean ones, the pups were mean. Interesting is that the physical traits also change as more breeding goes on. The calm, more domestic ones actually have tails that stand up and wag, while the mean ones snarl and the facial expressions are more vicious looking. Oh yes, dogs are domestic wolves by breeding them as so. My opinion of the current day Sheppard is that it looks malformed to me. And some of the other breeds come with their own weaknesses, as in medical problems. Just saying..