Blue Peter's silver tabby, Jack, will be in good company today, meeting champions who'll be competing in the chinchilla, silver tabby and Smoke Cat Society's 75th Anniversary Show. They include Premier Marisha Simpatico, or Tico for short, Grand Champion Andarphils, otherwise known as Cleo, and Saleila Prima Donna known to her owners as Prima. Discover what makes the champions purr - and what goes on behind the scenes to produce a real live Top Cat!