Have you ever walked past a dog so massive that you had to do a double take, wondering how much it eats or where it even ...

From pint-sized pooches to huge hounds, dogs come in all shapes and sizes. But even the smallest and largest breeds around have nothing on the pair of pups who hold the respective Guinness World ...

Big dogs play badass roles every day as guard dogs, herding dogs, service dogs, and countless other vital jobs that canines ...