Chartreux cats are as quiet and calm as they are silly and personable.easy to groom, easy to train, friendly toward humans, friendly toward other pets, good for first-time pet owners, high prey drive, tolerates being alone, tolerates being picked up.The Chartreux (pronounced shar-true) is a French breed that's been around for centuries. These cats are known for their short, blue-gray coats and quiet demeanor.