A working dog refers to a canine working animal, i.e. a dog that is not merely a pet but learns and performs tasks to assist and/or entertain its human companions, or a breed of such origin.
Some might argue that the variety of often exclusive canine jobs is a better justification for the dog's honorary title "man's best friend" than the more accidental popularity as the most popular kind of pet in Western cultures.
Best and Worst Dogs for Security - Ranks breeds for guarding, protection, and watchdog barking.
Meta Description: [ Ranks breeds for guard dog & protection duty. ]
Dog Detectives - An article from the New York Times discusses how dogs are trained to identify substances and people. Viewing requires free registration.
K9 Hero - Illustrated accounts acknowledge animals who have given more than expected of them, including those working with police, the military, search and rescue and as service dogs.
Meta Description: [ K9HERO.COM - We tell the story of the hero dog on the internet! We love dogs! ]
Working Dog Evaluation - A modification of the Puppy Aptitude Test used to predict temperament.
Working Dog Training - Free articles cover motivation, problem-solving and imprinting.