Even the toughest guard dogs have their playful side. Watch as these powerful canines, known for their strength and protective nature, let loose and have fun. From playful fetch sessions to running ...

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.