Affens are referred to as a 'terrier-type' breed, and terrier breeds may have been included in their development. However, they are considered a 'pinscher-schnauzer' breed rather than true terriers. They do display some terrier-like traits, including a strong personality.
Many dog breeds, the Affenpinscher among them, may suffer from tracheal collapse. In affected dogs, the cartilage that makes up the trachea—the 'windpipe' that delivers oxygen to the lungs—may flatten. When the trachea collapses, it reduces the amount of oxygen the dog receives. The obstructed airway may cause the dog to cough, wheeze, grunt, or lose consciousness depending on severity.
A dry cough, often aggravated by activity or excitement, may point to this condition—a veterinarian can diagnose a collapsed trachea through a physical examination and X-rays. Treatment usually includes management with antibiotics to prevent secondary infections, as well as steroids, and cough suppressants for comfort. Surgery may improve the condition, but isn't always necessary or advised.
Tracheal collapse is often congenital—the weakness in the trachea exists from birth. But external circumstances may cause or provoke the condition—small dogs like the Affenpinscher may benefit from a harness instead of a collar to prevent damage or limit irritation to the trachea.