North American Veterinary Licensing Examination (NAVLE) Practice Test

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Which of the following breeds is particularly predisposed to tracheal collapse?

  1. Labrador Retriever

  2. Pomeranian

  3. American Bulldog

The correct answer is: Pomeranian

The Pomeranian breed is particularly predisposed to tracheal collapse due to their anatomical characteristics and typical size. Smaller dog breeds, especially those with a narrow trachea and a predisposition to obesity, are more susceptible to this condition. In Pomeranians, the combination of their small size and genetic factors creates an environment where tracheal support structures may weaken, leading to the characteristic collapse of the trachea. This condition usually manifests in middle-aged to older dogs and is often exacerbated by factors such as excitement, exercises, or respiratory infections. While other breeds can experience tracheal collapse, they do not have the same level of predisposition as Pomeranians. Larger breeds, such as Labrador Retrievers and American Bulldogs, typically have more robust tracheal support and therefore are far less likely to develop this condition compared to the smaller toy breeds like the Pomeranian. This understanding of breed-specific risks is crucial for early recognition and management of the disorder in veterinary practice.