Many dog breeds have been collectively scored using standardized tests for behavioral personality traits central to their domesticated nature (for example, playfulness, sociability, aggression, trainability, curiosity, or boldness) and breed-specific function (for example, herding, pointing, chasing, working). Although there has been strong selection for breed conformation, interindividual variation suggests that genetics play a detectable role in shaping canine social behavior. http://advances.sciencemag.org/content/3/7/e1700398.full