Collies are sensitive dogs. A firm scolding & you’re given the classic melancholy look -Try fighting the urge to give into that beautiful heartbroken face." The caption for this pic also included “stubborn”, but I've never had a stubborn Collie.
I grew up with one as a child and she was so loving and protective. She lived to be 19 years old and was a constant and devoted companion. Love you, Lassie. (Not very original name I know but we were young)