From hypoallergenic and perfect for families with kids, to good guard dogs. These are some of the biggest dog breeds out ...

Related: Giant English Mastiff Getting 'Stuck' Around the House is the Definition of 'Big Dog Problems' It's clear from Kevin's video that Mastiffs are big dogs...really big dogs! In fact ...

Mastiffs were also used in medieval England as big-game hunters, guardians, and war dogs, fighting with the British in the Battle of Agincourt in 1415. While the breed is much calmer today than ...

Some barks sound big, but when it comes to size, Bertha has every dog beat at Border Tails Rescue. The 7-year-old, 170-pound mastiff got comfortable there, because she has been there for so long.