Their biggest pit bull, the 175-lb dog known as "The Hulk" has gained thousands of fans as videos of him and his small owner who they let him play with are going viral.
According to the owners, they trust the dog 100% and let him play with their young son. The toddler hangs from the back of The Hulk and he usually lets him ride along. The pair of them are so popular that they were invited to New York City for a VIP experience.
Mr Grennan, confirms everyone's fear about the dog being too large and said: "A dog the size of the Hulk could kill someone if it was in the wrong situation at the wrong time. The power of this dog is un-rivaled. If he bit down on someone's arm with full power it would snap like a toothpick," before adding that, “A dog is only as good as the owner."
The video of the Grennan's son and their dog has over 3 million views.