Duane "Dog the Bounty Hunter" Chapman recently discovered that he has another child. He’s opening up about meeting his adult son for the first time, and the symbolic importance of his previously secret son's birthday. Dog took to Instagram yesterday - which memorialized the fourth anniversary of his late wife Beth Chapman's death -- to share how meeting his son recontextualized the significance of this emotional date. "For the last four years, this day was a terrible reminder of one of the greatest losses of my life. But God redeemed this day when I discovered my son Jon, who I just met recently, was born on this day," Dog wrote on Instagram, alongside a photo of his adult son, and Dog's newly met daughter-in-law. "So now instead of sorrow, this day has a new meaning. This is my son Jon and his wife Jodi." The whole story of Jon is told in Dog’s new book, Nine Lives and Counting, coming soon. Dog was already the father of 12 children before introducing the world to his newly discovered son. Not much is known about Jon, or the circumstances surrounding his paternity.