Willow Biden joins long and varied line of White House pets

FILE - First lady Michelle Obama, left, follows her daughters Malia Obama, holding the leash for Bo, center, and Sasha Obama, holding the leash for Sunny, as they arrive to welcome the Official White House Christmas Tree to the White House in Washington, on Nov. 28, 2014. President Joe Biden and first lady Jill Biden have added a green-eyed tabby from Pennsylvania to the White House family. She's the first feline tenant since President George W. Bush’s controversially named cat India. With Presidents James K. Polk and Donald Trump among notable, no-pets exceptions, animals have a long history in the White House. (AP Photo/Susan Walsh, File)

FILE - President Bill Clinton's cat Socks peers over the podium in the White House briefing room in Washington on March 19, 1994. President Joe Biden and first lady Jill Biden have added a green-eyed tabby from Pennsylvania to the White House family. She's the first feline tenant since President George W. Bush’s controversially named cat India. With Presidents James K. Polk and Donald Trump among notable, no-pets exceptions, animals have a long history in the White House. (AP Photo/Marcy Nighswander, File)

Willow, the Biden family’s new pet cat, relaxes in the White House on Wednesday in Washington. President Joe Biden and first lady Jill Biden have added Willow, a 2-year-old, green-eyed, gray and white feline from Pennsylvania, to their pet family. (Erin Scott/The White House via AP)

NEW YORK — Welcome, Willow, to a long line of presidential pets.