From historian-in-residence at the Presidential Pet Museum, Andrew Hager, comes a fond, fascinating, and often surprising look at the dogs who were the best friends of the presidents, featuring unforgettable photographs.

President Biden’s German shepherds, Major and the late Champ, are the latest in a long line of presidential dogs. Dating all the way back to George Washington, dogs have been constant companions to nearly all of America’s presidents. Of the past 46 presidents, 31 have had at least one dog at 1600 Pennsylvania Ave.