The nation's first family welcomed Sunny—a one-year-old Portuguese water dog born in Michigan.

Sunny joins Bo, who arrived in 2009, and will likely join her big "brother" in keeping the President company in the Oval Office and on plenty of evening walks. (Watch a video of the presidential pooches.)

After Bo's introduction, Portuguese water dogs enjoyed the biggest publicity boom since the breed's introduction into the U.S. in the late 1960s.

Here are some interesting facts about the first family's favorite breed.

Portuguese water dogs were historically tasked with being superior seafarers, thanks to their webbed toes.

According to the Portuguese Water Dog Club of America, the breed was prized by fishers along the coast of Portugal as both