his name is hulk well, look at him   what else would you call him? weighing twelve and a half stone (175 lbs), he is believed to be the world's largest pit bull and because he is only 17 months old, he hasn't stopped growing yet proud owners marlon and lisa grennan, from new hampshire, say their monster pet  is 100 per cent trusted with their three year old son, jordan, despite the breed's fierce reputation and even let him ride the animal like a horse indeed, photographs show the toddler happily riding on the canine's back, grabbing the collar just behind its 28 inch wide head while pit bulls are branded 'dangerous' with breeding bans enforced in the uk, mr grennan claims they are actually very caring and fit for the family scroll down for video  impossible to miss: the grennan's dog is almost three times bigger than a normal american pit bull terrier  give us a hug: hulk is just as tall as his handler frances cummings  all aboard! proud owners of the world's biggest pit bull dog have told how their three year old child rides the 175lb pooch like a horse  'these dogs are very balanced and gentle   they are nanny dogs,' he said 'i don’t think it’s irresponsible for people to have pit bulls and children they’re dogs just like any other dog 'no matter what the breed it is, it is hundred per cent how you raise them' however, mr grennan acknowledges that a dog the size of the hulk 'could kill someone if it was in the wrong situation at the wrong time' and 'snap an arm like a toothpick' the grennan's dog is almost three times bigger than a normal american pit bull terrier he is also still a puppy meaning he could grow even bigger each day he is fed a protein rich diet consisting of supplements and 4lbs of ground beef the grennans believe the bigger the dog, the better giddy up: marlon and lisa grennan, from new hampshire, say their monster pet 'the hulk’ is 100 per cent trusted with their son, jordan, despite the breed's fierce reputation  open wide: hulk showcases his big teeth as he's taken for a walk  dinner is served: each day he is fed a protein rich diet consisting of supplements and 4lbs of ground beef  shall we dance? hulk with mrs grennan at home on february 22, 2015 in new hampshire  together they run dark dynasty k9s, which specialists in breeding some of the world's most fearsome guard dogs marlon, a former boxer, formed the company ten years ago with just two dogs, after suffering a hand injury which ended his career they now own more scores of dogs, many who live in the house with the family on a sprawling 150 acre ranch these include more than more than a dozen highly trained pit bulls   and a single chihuahua and while he admits his dogs are trained for aggression and power, he says the criticism is usually from people who lives in safer environments with no need for protection he added: 'it’s very, very, important what i’m doing 'i live in new hampshire where there’s no crime and i don’t have to worry about that kind of stuff 'but i’ve got clients in grenada and parts of africa where there is i’ve got clients in terrible, terrible places they don’t live in candyland, they live in fear 'and why should somebody else live in fear if they don’t have to so that’s my job, to try to alleviate somebody else’s fear by giving them a family dog too' speaking out: while pit bulls are branded 'dangerous' with breeding bans enforced in the uk, mr grennan claims they are actually very caring and fit for the family  ultimate protection: the grennans believe the bigger the dog, the better  going for walkies: together they run dark dynasty k9s, which specialists in breeding some of the world's most fearsome guard dogs  animal magic: marlon, a former boxer, formed the company ten years ago with just two dogs, after suffering a hand injury which ended his career   his son (pictured above) has grown up with the pets 
us four pounds
fearsome hound is bred by us firm specializing in guard dogs . he towers above his owners when standing on his hind legs . the pooch eats four pounds of ground beef every day and will only get bigger as he is only around 17 months old 