[quote=crnosrce1]You could say that the CO is just a bigger and less stable Sar. :wink: :P[/quote] Bigger maybe but certainly not less stable. It is the Russian CO breed standard that requires strong nerved, well balanced dogs. That means CO are to be stable dogs as an objective. I recommend that you go to http://www.fci.be and read the FCI breed standards for the various LGD breed with attention to the temperament descriptions for each.