Pete Souza/The White HouseBo knows the White House.
President Barack Obama and the first family welcomed a 6-month-old Portuguese water dog on Saturday.
Daughters Malia, 10, and Sasha, 7, named the presidential pooch Bo, according to the Washington Post, because Michelle Obama's father was nicknamed Diddley, as in Bo Diddley, and because their cousin has a cat named Bo.
The curly, black-haired, allergen-free puppy was a gift from Massachusetts Senator Edward Kennedy. It's the very first pet dog for Obamas.
Bo will have his official unveiling on Tuesday.