We all remember George W.’s dog, Barney, and most of us remember the senior Bushes’ scribal pooch, Millie. The Clintons of course had Chelsea’s cat, Socks, and Buddy, the chocolate Lab that Bill got himself after everything went all wrong and he needed a friend. But can you name any of Reagan’s six dogs? (Only a Republican could name a Golden Retriever “Victory.” That poor, poor creature.) Jimmy Carter’s daughter Amy had a cat called Misty Malarky Ying Yang, which is a bit of a hoot, but as always, deeper history is far more entertaining. So: more...