Which of the following would be considered a brachycephalic breed?

• A. Dachshund
• B. Border Collie
• C. Shih Tzu
• D. Labrador Retriever

Answer: (C)

Brachycephalic describes dogs with a very short, wide skull and a flat-faced appearance, giving a noticeably short muzzle. This skull shape is common in small companion breeds and is associated with particular airway anatomy and potential breathing issues.

Shih Tzu is a classic brachycephalic breed: a small dog with a notably short nose and flat facial profile, embodying the short-muzzled look. The other breeds listed don’t share that skull shape—Dachshunds have elongated heads (dolichocephalic), while Border Collies and Labrador Retrievers have more middle-length muzzles and skulls (mesocephalic). So the Shih Tzu best fits the brachycephalic category.