In the taxonomy of domestic dogs (Canis lupus familiaris), there are canines of all shapes and sizes, but rest assured, they are all good. A real pup enthusiast knows that within this framework, there are even more intricate strata: There are doggos, puppers, pupperinos, shoobs, shibes, shooberinos and longboys, for example. While we know all dogs are good boys (and girls), the question remains -- do dogs know?