The Boxer is one of the most recognizable breeds in the world. It currently ranks among the top twenty in AKC registrations and has held that position for decades. It became a cultural fixture in the 1950s when a Boxer named Bang Away — the great-great-grandson of dogs that a German breeder had sold abroad to prevent them from starving in wartime — won Best in Show at Westminster and became the first dog of any breed to achieve 121 Best in Show wins.

That story goes deeper than most people know. The Boxer's path from a medieval hunting dog in Germany to the dog in your living room passes through one of the most remarkable figures in the history of any breed: Friederun von Miran-Stockmann, a sculptor who fell in love with a Boxer named Pluto and spent sixty years keeping the breed alive through two World Wars, Nazi interference, near-starvation, and the loss of dog after dog to combat. She fed her remaining dogs by cycling miles to source cow intestines and rummaging in military dumpsters. When she could no longer sustain them, she sold her best dogs to America. They became the genetic foundation of every Boxer alive today.

The Boxer is no longer primarily a working dog in the way it once was. The German Shepherd and Belgian Malinois have largely taken over modern police and military roles. But the Boxer remains a working dog in police forces across Europe — particularly in Germany, where the breed originated — and its working drives are fully intact in every dog sitting in a living room anywhere in the world.

And inside those working drives, in a significant proportion of the breed, is Arrhythmogenic Right Ventricular Cardiomyopathy — ARVC. A hereditary heart condition that replaces normal cardiac muscle with fatty tissue, generates dangerous arrhythmias, and in its most extreme expression causes sudden death with no prior warning. At any age. In dogs that appear completely healthy.