ROANOKE, Va. – On the pediatric floor at Carilion Roanoke Memorial Hospital, a special visitor is spreading joy to patients and staff alike. Trooper, a 130-pound Great Dane, is a regular at the hospital along with his owner, Tony Hernandez. Together, they’ve volunteered with Therapets of the Roanoke Valley for the past two years, visiting young patients like six-year-old Peyson Yeary and his mom, Amber.