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Which of the following dog breeds is classified as brachycephalic?

  1. Beagle

  2. Pekingese

  3. Labrador Retriever

  4. German Shepherd

The correct answer is: Pekingese

The Pekingese is classified as a brachycephalic breed due to its distinctive flat face and short muzzle. Brachycephalic breeds are characterized by their broad, short skull structure, which leads to a variety of health issues related to their respiratory systems. This structure can cause challenges such as breathing difficulties, overheating, and problems with dental alignment. The Pekingese exemplifies these characteristics, making it a clear example of a brachycephalic dog. Other breeds mentioned, like the Beagle, Labrador Retriever, and German Shepherd, have longer muzzles and do not fall into the brachycephalic category. They have different skull shapes, which are considered mesocephalic or dolichocephalic, and therefore do not exhibit the same respiratory risks associated with brachycephalic breeds.