Who let the dog out?
That's the Washington mystery du jour.
The identity of the first puppy — the one that the Washington press corps has been yelping about for months, the one President Obama has seemed to delight in dropping hints about -- leaked out yesterday. This despite White House efforts to delay the news until the big debut planned for Tuesday afternoon.
The little guy is a 6-month-old Portuguese water dog given to the Obama girls as a gift by that Portuguese water dog-lovin' senator himself, Edward M. Kennedy of Massachusetts. The girls named it Bo — and let it be noted that you learned that here first. Malia and Sasha chose the name, because their cousins have a cat named Bo and because first lady Michelle Obama's father was nicknamed Diddley, a source said. (Get it? Bo . . . Diddley?)