The pair of Portuguese water dogs - Bo with his distinctive white chest and front paws, and the all-black Sunny - are canine ambassadors for the White House, very popular and so in demand that they have schedules, like the president.
"Everybody wants to see them and take pictures," Michelle Obama said. "I get a memo at the beginning of the month with a request for their schedules, and I have to approve their appearances."
The dogs have entertained crowds at the annual Easter Egg Roll and Bo has been at Mrs. Obama's side when she welcomes tourists on the anniversary of the president's inauguration.
Bo, now 7, joined the Obama family in April 2009. He was a gift from the late Sen. Edward M. Kennedy, D-Mass., a key supporter of Obama's 2008 presidential campaign who became close to the family. Bo helped Obama keep a promise to daughters Malia and Sasha that they could get a dog after the election.
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Bo already had a job as a "helper" to Dale Haney, the head groundskeeper at the White House, which happens to be a national park.
"He leaves every morning and he goes down with Dale ... and he's with all the National Park Service guys. And you'll see him, and he's like walking around with them, and looking at the plants," Mrs. Obama said. "I think he thinks he has a job because he takes it very seriously. So if I go out and see him, he kind of ignores me when he's with his worker crew people."
Presidential pets are always popular and many presidents kept dogs as companions. President Harry S. Truman famously advised: "If you want a friend in Washington, get a dog." President George H.W. Bush's English Springer Spaniel, Millie, "wrote" the best-seller "Millie's Book.