Edgar Buchanan, who portrayed an uncle of Bea Benaderet's character, was only 3 years older than Benaderet in real life. The Season 3 cast of Petticoat Junction in 1966. Sitting on table: Higgins the dog. Front row (L-R): Lori Saunders (Bobbie Jo), Bea Benaderet (Kate), and Edgar Buchanan (Uncle Joe).