Probably the most cited paper regarding this debate is by Marc Bekoff, "Cognitive Ethology: Slayers, Skeptics, and Proponents" (http://cogprints.org/160/1/199709005.html). Your original comment would be categorized as a "slayer" a position which is widely criticized. In fact Bekoff's focus is on canines and he used your exact example with dogs, but to opposite affect.