Reading Gilbert Adair’s second Evadne Mount mystery, A Mysterious Affair Of Style (2007), I note that his film director character Rex Hanway has a cat called Cato. This served to remind me of a personal favourite from the implausibly vast Hooting Yard archives, the 2004 quotation from Spine-Tingling Tales Of Glucose Deficiency by Istvan Scrimgeour :  “He had two pets: a cat called Doge and a dog called Cato.”