12 Reasons Why Dogs Are Man's Best Friend

Dating back to the 16th century, dogs have served as service helpers for the blind, and by the 1970s dog trainers developed techniques for dogs to assist people with disabilities. As if those duties aren’t enough, dogs also help prevent possible crimes and save lives, as in the cases of drug-sniffing and bomb-sniffing canines. German shepherds, a 200-year-old breed, are most commonly seen serving as canine police all around the world.