One child, 9-year-old Zachary Tucker, says that his dog Clyde, trained by Vogt just for him, has been instrumental in improving his quality of life.
"My anxiety has been brought down by at least 70 percent and I've been calm enough to socialize with kids, which I haven't been able to do in a long time," he says.
ABC News recently tagged along with Zachary and Clyde as they returned to the correctional facility to meet with Vogt. For a few moments the convicted felon had the chance to see first hand the positive influence he and the dogs he helped train were having on the lives of those beyond the prison walls -- reminded that while there are things that he can never change, he could still make a difference.
"This is thing I do to give back," Vogt said. "When Zach and even the other kids get to work with me, they don't get to see the murderer. This has given me a chance to do something better."