The four-legged members of our nation's first families.
Quentin Roosevelt, son of President Theodore Roosevelt, rides his pony at the White House. (1902)
In the absence of President and Mrs. Harding, the first family's pet airedale Laddie Boy acted as host for the annual White House Easter egg roll. (April 2, 1923)
Grace Coolidge holds the family's pet racoon, Rebecca.
King Tut, President Hoover's German shepherd, stations himself with a White House guard. (April 11, 1929)
President Franklin D. Roosevelt vacations with his dog Fala in Connecticut. (Aug. 3, 1941)
Feller, a five-week-old cocker spaniel puppy sent to President Harry Truman as a gift, poses beside his crate in a White House corridor. (Dec. 22, 1947)
Caroline Kennedy's pet pony Macaroni accepts a handout from Towner Keener through the fence surrounding the White House grounds. The pony grazed the lawn of the executive mansion. (March 16, 1962)
President Lyndon Johnson spends quality time with his pet beagles, Freckles and Kim, aboard Air Force One.
The infamous Checkers hangs out with then-Vice President Nixon in Washington, D.C. (July 2, 1959)
Former President Richard M. Nixon in White House with his dog, Vicky, the night before he resigned as the nation's Chief Executive. (Aug. 1974)
President and Mrs. Ford along with daughter Susan admire their golden retriever, Liberty, and her litter of puppies. (Sept. 17, 1975)
President Jimmy Carter and Rosalynn Carter play with their dog Grits on the south lawn of the White House. (Aug. 6,1978)
Standing outside the diplomatic entrance of the White House, President and Mrs. Reagan and their dog Rex gaze at the National Christmas tree. (Dec. 12, 1985)
First lady Barbara Bush and her granddaughter, Marshall Lloyd Bush, visit with first dog Millie and her six puppies in the residence of the White House. (March 18, 1989)
First puppy Buddy greets President Clinton at the White House. (March 2,1998)
Socks the cat peers over the podium in the White House briefing room during the Clinton administration. (March 19, 1994)
Barney and President Bush board Air Force One, on their way to a family reunion in Kennebunkport, Maine. (July 5, 2002)
President George W. Bush with his dog Spot on the South Lawn of the White House. (Sept 23, 2002)
President Barack Obama(Credit: AP)
President Barack Obama and his daughters, Malia and Sasha, on the South Lawn of the White House with Bo, the first family's Portuguese water dog, on April 14, 2009.
President Barack Obama pets the family dog Bo, a Portuguese water dog, outside the Oval Office. (March 15, 2012)
Sunny and Bo Obama roam the grounds of the White House. (Sept. 10, 2013)