Without doubt,the king of the dog kingdom is the English Mastiff.As a gift betwwen royalty in days gone by someone one said,"The English Mastiff is to the dog kingdom what the Loin is to the cat,and all others fall beneath it".The worlds heaviest dog is a English Mastiff and weighs a hefty 19 stone,As a pet you could not wish for a more loyal dog,both playful ana friendly,it is not as tempermental as other Mastiff breeds,yet would protect its owner with its life you could not wish for a better dog,yet everyone would think this about there dog!