Meet Sunny, the Obamas' New Puppy

WASHINGTON - The Obamas have welcomed another member to the family: Sunny, their new 1-year-old puppy.

Bo's new baby sister, also a Portuguese water dog, made her public debut this evening.

"So excited to introduce the newest member of the Obama family - our puppy, Sunny!" Michelle Obama personally tweeted.

The White House introduced Sunny in a blog, complete with photos and a slow-motion video of Bo and the puppy playing on the South Lawn.

"Sunny is the perfect little sister for Bo - full of energy and very affectionate - and the First Family picked her name because it fit her cheerful personality," the White House notes.

Bo now assumes the role of big brother, in addition to his many official duties, which include helping to host the annual Easter Egg Roll, serving as a muse for the holiday decorations, and acting as an Obama family ambassador. He's one busy pooch.

"We suspect Sunny will follow in Bo's footsteps and keep the President company in the Oval Office, go for walks with the First Family after their 6:30 family dinner and even jump up on the First Lady's lap from time to time!" the White House said.

(Official White House Photo by Pete Souza)