According to Denman, her dog knew something wasn't right and somehow escaped. “My dog put up a good enough fight to have them let the dog out,” she said. Boston police say an officer located Lexi and corralled her. “I hope she’s not too traumatized because sometimes these interactions can actually hurt the service dog and put them straight into retirement,” Denman said, tearing up. Dogs have been man's best friend for thousands of years. And they have one of man's most important jobs - serving our nation's heroes. Rory Diamond is the CEO of K9s for Warriors, an organization that places service dogs with veterans suffering from PTSD or other trauma.