Sunny, a female, joins fellow Portuguese Water Dog Bo in the White House.

In honor of Sunny, the Obamas are making a donating to the Washington Humane Society, according to a post on the White House blog announcing the puppy's arrival.

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“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,” according to the post, which included photos and a video of the first dogs.

First Lady Michelle ObamaMichelle LeVaughn Robinson ObamaMelania Trump to attend Barbara Bush's funeral The Hill says goodbye to 50 Most Beautiful Family, friends mourn death of Barbara Bush MORE tweeted her excitement for Sunny's arrival.