Weight-pull competitions keep surprising trainers, veterinarians, and judges. Verified results show small dogs hauling loads that look more like industrial equipment than their body size would suggest ...

Some dogs were born for cuddles—these ones? They were built to work. For centuries, canines have been heavy lifters who haul sleds across the Arctic, drag carts through rugged terrain, and even save ...

PITTSBURGH—Lemon, a five-pound Chihuahua, waited at the starting line until her owner signaled “go,” then pulled a wheeled cart weighing 260 pounds down a 16-foot chute. Amid applause, the pint-size ...