Looking for a children’s picture book, probably from the 1960’s, possibly late 1950’s. Title, author, publisher unknown. Typical small book like Little Golden Books. Plot included a family with a dog that it is hoped would be a watchdog but sleeps through a burglary. It seems that the father scolds the dog and it says “Bow Wow”. It appears they will have to get rid of the dog. The family includes a toddler, a little girl named Millicent, who never says anything. The phrase “Millicent did not say anything” (or something to that effect) is used after each event. At the end, somehow the dog redeems himself and they get to keep him. At which point, Millicent says, “Bow wow.”