A dog's keen sense of smell allows them to distinguish the unique scent of other dogs
Key differences in movement, silhouette, tail, muzzle shape, etc. set dogs apart visually.
Visual Identification Cues
The distinct sounds, pitches and patterns of dogs' barks and growls identify them.
The way dogs interact, play and communicate varies from other species.
Studies show dogs categorize other dogs separately from people, cats and inanimate objects.
Dogs likely identify those of the same breed through shared physical traits and scents.
Most dogs behave differently with dogs than unknown humans or predators based on instinct.