text: I run a rescue that often has to rehabilitate these dogs. They love running because 95% of their life is tied to a short chain. Get over yourself and the bs that any intelligent, social animal *loves* that, and prefers it to being in a comfortable, loving home where it gets affection and mental stimulation daily. 
  100% of the sled dogs we've rehomed flip their minds if you try to put them back on a tie out.