. . . Cap? I'm not sure that I buy some new research claiming that dogs understand basic concepts of fairness and experience jealousy. I have a feeling that dogs have a very different relationship to tricks and basic commands on the one hand, and the genuine work of the working border collie on the other. I'd like to see some research into that, to see whether a working border collie would cease working because the dog perceived another dog getting more praise or attention. Somehow, I have my doubts!