Also, some breeds of dog are more behaviorally driven by scent or vision, and the morphology of their nose and face matter too.
Some dogs are "sighthounds", the greyhound being the classic example, which primarily orient on vision and use speed to hunt, some are "scent hounds" the bloodhound being sort of the canonical example, which use scent tracking and endurance rather than speed.
Some dogs are "sighthounds", the greyhound being the classic example, which primarily orient on vision and use speed to hunt, some are "scent hounds" the bloodhound being sort of the canonical example, which use scent tracking and endurance rather than speed.