Dogs come in all shapes and sizes, but as any puppy aficionado knows, they are always cute—no matter how big or small—even when a dog tall enough to drink from the kitchen sink thinks he's a lapdog.

Whether gentle giants, vigilant herding dogs, or swift greyhounds–they share a crucial commonality: They belong to the largest dog breeds in the world. Their history is closely tied to human needs, ...

With the number of people buying new dogs soaring, here are the largest breeds that you might like to add to your family. Many of us have welcomed new four-legged family members over the last few ...