Heartworms. It's not pretty, but it is preventable. DR. CB CHASTAIN, MU's Veterinary Health Center, is here with advice on what to do should your furry friend get infected. Also, TIM THOMAS invites everyone to a night of improv at Talking Horse Productions. If you're a fan of the tv show "Whose Line Is It Anyway," you're sure to enjoy "Off the Cuff." (4:34) June 20, 2018