Spectators outside the White House received a rare treat this morning when they witnessed First Lady Michelle Obama on the South Lawn going for a stroll with the familys pet rhinoceros, Chauncey. Owning a rhino is a lot of work, but all of the Obamasand especially Michellereally love Chauncey, said White House spokesperson Sam Davidson of the 3,000-pound eastern black rhinoceros the family adopted in December after Barack Obamas reelection promise to finally get Sasha and Malia that rhino theyve been wanting. And Chauncey really loves them all, too. He sleeps inside the White House master bedroom, he gives Sasha and Malia fun rhino rides, and he always charges at the president whenever he first enters the Oval Office. Sources confirmed that the Obamas have been considering purchasing a steel cage for Chauncey ever since the rhino accidentally gored Health and Human Services Sec. Kathleen Sebelius earlier this month. 