Bo the Portuguese water dog made his White House debut under cloudy skies Tuesday afternoon, spending several minutes taking his new family on a lively romp over the South Lawn with frequent stops for hearty sniffs at his new surroundings. Bo landed on all four feet at his fourth home in his six short months of life, fulfilling President Obama’s campaign promise to get his daughters a dog in return for all the time he spent on the road during the long presidential fight. “He’s a star.