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.

With the number of people buying new dogs soaring, here are the largest breeds that you might like to add to your family.

Bringing down an elk, buffalo or musk ox, let alone a human, does not present much of a challenge. Luckily, they tend to ...