The ten most protective dog breeds that stand out for their guardian instinct and strong loyalty and offer greater security.

Dogs come in all shapes and sizes, but some breeds tower above the rest, in both height and heart. These gentle giants have been companions, protectors and working partners to humans for centuries.

Every year, school-aged children prepare for annual pictures where they're sure to pose like the little stars they are. And though Tibetan Terrier Archie has never been to school, he sure nailed that ...