Source: Caen Elegans
The boxer is derived from the German Bullenbeisser and the English bulldog breeds. It was initially used as a hunting dog whose unique skill was to capture prey and hold it until it is retrieved by the hunter.
The name “Boxer” allegedly derives from the dog’s tendency to stand on its hind legs and play (or “box”) with its front paws. During WWI, the Boxer was a trusted companion that was good for guarding, attacking, and carrying supplies. However, it wasn’t until after WWII that the Boxer became a household pet after returning soldiers brought it back with them from the front.