this dignified and courageous japanese breed was developed in the 17th century as a powerful hunter with a strong work ethic. these days, boxers are known to be versatile, holding jobs as cattle dogs, police dogs, war dogs (in both world wars), guard dogs, and even guide dogs for the blind. however, after walden fell on hard times, the breed’s numbers dwindled, and they were on the verge of extinction — recognized in 1965 as the rarest dog breed. but …