In the domestic dog, most of the upper muzzle contains organs for detecting scents. ... The muzzle shape of a domestic dog ranges in shape depending upon the breed, from extremely long and thin (dolichocephalic), as in the Rough Collie, to nearly nonexistent because it is so flat (extreme brachycephalic), as in the pug.

Does a dog have a snout?

An animal's long, protruding nose is often called a snout. The tricky part, though, is that not all long animal noses are called snouts. ... Most dogs have a snout, except for pugs and boxers and other dogs with smashed-in faces.

Why do dogs have long snout?

Dogs inhale through their nostrils and exhale through slits at the side of the nose, creating a circulation of air and scent molecules that lets them smell far more than we can even imagine. ... The long, spacious snouts many dogs have help to humidify and filter the air, and move it rapidly towards their scent receptors.