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 ...

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 ...

If you’re interested in tough, robust and seriously strong dog breeds, you’re in the right place. In this article we’re going to look at some of the strongest dog breeds around, as well as explore ...