He towers above his owners when standing on his hind legs!
The enormous hound is owned by Dark Dynasty K9s, from New Hampshire, which specialises in breeding some of the world’s most fearsome guard dogs.
Hulk, who towers above his handlers when standing on his hind legs, has now become an internet star after footage of him uploaded to YouTube racked up around 1.1 million in just one week.
American Pit Bull Terriers were created as fighting dogs by crossbreeding bulldogs, mastiffs and terriers. They are descendants of English dogs used to bait bulls and bears for cruel pit fights.
They continue to be used for illegal dog fighting in the US and In the UK are considered so dangerous it is illegal to own one.
However Dark Dynasty K9s insist their animals have calm, well balanced temperaments and would be suitable as family pets.