This book is an oldie but a goodie.  Pinkerton is a Great Dane, who has a lot of trouble learning their commands.  So much so they flunk out of obeisance school.  However, when the house is invaded by a burglar Pinkerton will save the day, even if the family has to use the “wrong” commands to get the “right” answer.   This book has been banned, but also “fixed” by the author to take out references of guns after Sandy Hook.  It was the author that approached the publisher about the new edition for it’s 30th anniversary.