Hmmmmm. Sirocco has bald thighs, butt, tummy and chest. His thyroid levels are well within normal. I can't imagine that he could have lower stress levels and still be alive. His baldness does not concern me since he is also healthy, active, happy and very ornery. On the other hand, Yukon has tons of hair. So much, that I wonder if he isn't part lab. Of our 3, Yukon is also the most easily stressed. I believe he had been mistreated in a previous home since he cowers, shakes and hides anytime someone has their arm raised around him or talks loudly.
I wonder if canine baldness isn't genetic like human baldness.