I have a Tibetan Mastiff bitch that seems perminently depressed, she is twelve months old is very vocal when our but in the home she does not want to interact with the family, I have had these type of dog since 1986 and know they can be aloof but this one is just ridgid she is fisically fit eats well, but has no enthusiasm for life. We tried everthing we can think or to interest her to show wome life Her companion is 10 day younger than her and never stops playing with our other dogs. any toughts to get her going , she is a wet blanket in the show ring her conformation has turned out great,but her lack of enthusiasm lets her down, and they are both qualified for cruft, but she may have to stay at home,as at her speed it would take her a week to get round the ring, Thyrod is not a problem as checked BRITNEY1000

i suppose if healths ok then its her nature, look at people, were all different, !!! not many of us would want to be on the stage :D , it sounds like its the way she is,!!! id let her be,