Sunny was born in Michigan in June 2012, and arrived at the White House today. Just like Bo, she’s a Portuguese Water Dog, which works great for the Obamas because of allergies in their family.

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.

In the past, Bo has been eager to help the First Family with their official duties, from visiting Walter Reed and the Children’s National Medical Center, to inspecting the Holiday decorations at the White House, to greeting guests at the White House on tours and during the Easter Egg Roll, but in October, the First Lady told reporters that she hosted a “doggie play date” because “Bo doesn't have enough dog interaction.” So now, in addition to helping with those official duties, Bo takes on the important role of big brother!