A Dog's Size and Head Shape Predicts Its Behavior

The shape and size of a dog seems to be associated with its temperament.

They're All Good Dogs, and It Has Nothing to Do With Their Breed - The New York Times

Puppy Growth Chart [Stages of Growth + How To Determine Ideal Size] - HolistaPet

UWO Dog Cognition Lab

How Emotions Go Downhill in People with Personality Disorders

Is a Dog's Head Shape Related to His Intelligence?

Does a Dog's Head Shape Predict How Smart It Is?

Your dog's breed doesn't determine its personality, study suggests, Science

Animals, Free Full-Text

English Lab vs American Lab

No simple way of predicting breathing difficulties in pugs, French bulldogs and bulldogs from external features

The Shape of Your Head and the Shape of Your Mind - The Atlantic