More than a dozen states will officially observe K-9 Veterans Day on March 13. by Jeffrey B. Roth photos by Phil Grout For longer than the span of memory or history, dogs and humanity have marched side by side into the future. Dogs are family members, friends, playmates, co-workers, rescuers, protectors, teachers, advocates and therapists — all rolled up into a shaggy, cold-nosed, tail-body wagging package of unconditional love and fidelity. Sometimes it is difficult to tell whether dogs or people are the main benefactors in the relationship. As warriors, dogs and soldiers bravely serve their home and...