Nick Hogan paid tribute to his dad, Hulk Hogan, who died last week at age 71, in an emotional post on Instagram. Nick posted Saturday night that dad Hulk, who died Thursday of a reported cardiac arrest, was his "hero" and "best friend."

Nick Hogan shared a tribute to his late father Hulk Hogan, as he remembered the former pro-wrestling star as the "best dad in the world."