Meet Hulk, the 174-pound American pit bull terrier whose enormous frame has turned him into an Internet sensation.

Hulk’s owners, Marlon and Lisa Grennan, run Dark Dynasty K9’s, a breeding kennel on a 150-acre New Hampshire ranch that trains protection dogs. “These dogs are absolutely fearless because they are trained to be 100 percent fearless,” says Marlon in a video with Barcroft Media.

For more photos, click here to see Dark Dynasty K9’s Facebook page. 

DDK9’s pit bulls can sell for anywhere from $1,500 to $30,000. And the family business boasts an international clientele that includes law enforcement agencies, celebrities and “regular” families. But there’s no doubt that Hulk is the Grennan family’s prized possession.

Hulk originally gained attention when DDK9 first posted a video of the 17-month-oldon their YouTube channel earlier this year. The video racked up more than 1 million views in less than a week.

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