Sergeant Mark Tappan shares a unique bond with his K9 partner Mattis, one of the most decorated police K9s of all time. Mark knew from the first time they interacted that Mattis was something special. As a follower of Jesus, Mark also knew that God's most profound teaching often comes through the most unexpected sources, and he soon realized that Mattis was going to teach him about loyalty, selfless service, and so much more!