According tonew research from the University of Sydney and published in Plos One, the size of a dog and skull shape of a dog are important factors in a dog's behavior. Dr. Paul McGreevy from the University of Sydney's Faculty of Veterinary Science explains that certain types of canine physical characteristics can contribute to a dog's behavior.
More than 8300 dogs of over 80 different breeds were described in the dog owner reports used in this study. Dr. McGreevy and colleagues used the Canine Behavioral Assessment and Research Questionnaire (C-BARQ) and they also examined the sizes of over 960 dogs.
Dr. McGreevy explains how smaller dogs seemed to have more aggression issues, and thatdog behavior norms will depend on more than a dog's breeding. According to the research published in Plos One, certain physical characteristics in dogs such as height, body weight, and skull proportions (length and width of the skull) are linked to certain types of behavior.