This photograph was taken by Matthew D'Agostino on April 6, 2015, during the official White House Easter Egg Roll. Here, President Barack Obama leads Bo, one of the first family's Portuguese Water Dogs, down the steps of the South Portico. He is joined by the official White House Easter Bunny, who carries a bunch of balloons, commemorating the fifth anniversary of First Lady Michelle Obama's "Let's Move!" campaign. The theme of the official White House Easter Egg Roll in 2015 was #GimmeFive, which commemorated the fifth anniversary of the initiative by challenging the public to incorporate five new healthy habits into their daily routine, and share their positive lifestyle choices on social media. The event featured sports and fitness zones, cooking demonstrations, storytelling, appearances by costumed characters, musical performances, and classic seasonal activities such as an egg hunt and egg roll race. Performers at the event included rapper Diggy, girl group Fifth Harmony, pop duo MKTO, the cast of the Broadway musical "Newsies," “So You Think You Can Dance" all-star contestants, and entertainers from the classic children's television show "Sesame Street."

This photograph was taken by Matthew D'Agostino for the White House Historical Association on April 6, 2015, during the official White House Easter Egg Roll. Here, First Lady Michelle Obama leads Sunny, one of the first family's Portuguese Water Dogs, down the steps of the South Portico. President Barack Obama walks a short distance behind with Bo, the first family's other dog, and the official White House Easter Bunny. The theme of the official White House Easter Egg Roll in 2015 was #GimmeFive, which commemorated the fifth anniversary of the first lady's "Let's Move!" campaign by challenging the public to incorporate five new healthy habits into their daily routine, and share their positive lifestyle choices on social media. The event featured sports and fitness zones, cooking demonstrations, storytelling, appearances by costumed characters, musical performances, and classic seasonal activities such as an egg hunt and egg roll race. Performers at the event included rapper Diggy, girl group Fifth Harmony, pop duo MKTO, the cast of the Broadway musical "Newsies," “So You Think You Can Dance" all-star contestants, and entertainers from the classic children's television show "Sesame Street."

This photograph was taken by Matthew D'Agostino for the White House Historical Association on April 6, 2015, during the official White House Easter Egg Roll. Here, First Lady Michelle Obama leads Sunny, one of the first family's Portuguese Water Dogs, down the steps of the South Portico. President Barack Obama walks a short distance behind with Bo, the first family's other dog, and the official White House Easter Bunny. The theme of the official White House Easter Egg Roll in 2015 was #GimmeFive, which commemorated the fifth anniversary of the first lady's "Let's Move!" campaign by challenging the public to incorporate five new healthy habits into their daily routine, and share their positive lifestyle choices on social media. The event featured sports and fitness zones, cooking demonstrations, storytelling, appearances by costumed characters, musical performances, and classic seasonal activities such as an egg hunt and egg roll race. Performers at the event included rapper Diggy, girl group Fifth Harmony, pop duo MKTO, the cast of the Broadway musical "Newsies," “So You Think You Can Dance" all-star contestants, and entertainers from the classic children's television show "Sesame Street."

This photograph was taken by Matthew D'Agostino for the White House Historical Association on April 6, 2015, during the official White House Easter Egg Roll. Here, First Lady Michelle Obama leads Sunny, one of the first family's Portuguese Water Dogs, down the steps of the South Portico. President Barack Obama walks a short distance behind with Bo, the first family's other dog, and the official White House Easter Bunny. The theme of the official White House Easter Egg Roll in 2015 was #GimmeFive, which commemorated the fifth anniversary of the first lady's "Let's Move!" campaign by challenging the public to incorporate five new healthy habits into their daily routine, and share their positive lifestyle choices on social media. The event featured sports and fitness zones, cooking demonstrations, storytelling, appearances by costumed characters, musical performances, and classic seasonal activities such as an egg hunt and egg roll race. Performers at the event included rapper Diggy, girl group Fifth Harmony, pop duo MKTO, the cast of the Broadway musical "Newsies," “So You Think You Can Dance" all-star contestants, and entertainers from the classic children's television show "Sesame Street."

This photograph was taken by Matthew D'Agostino for the White House Historical Association on April 6, 2015, during the official White House Easter Egg Roll. Here, First Lady Michelle Obama leads Sunny, one of the first family's Portuguese Water Dogs, down the steps of the South Portico. President Barack Obama walks a short distance behind with Bo, the first family's other dog, and the official White House Easter Bunny. The theme of the official White House Easter Egg Roll in 2015 was #GimmeFive, which commemorated the fifth anniversary of the first lady's "Let's Move!" campaign by challenging the public to incorporate five new healthy habits into their daily routine, and share their positive lifestyle choices on social media. The event featured sports and fitness zones, cooking demonstrations, storytelling, appearances by costumed characters, musical performances, and classic seasonal activities such as an egg hunt and egg roll race. Performers at the event included rapper Diggy, girl group Fifth Harmony, pop duo MKTO, the cast of the Broadway musical "Newsies," “So You Think You Can Dance" all-star contestants, and entertainers from the classic children's television show "Sesame Street."

This photograph was taken by Matthew D'Agostino for the White House Historical Association on April 6, 2015, during the official White House Easter Egg Roll. Here, First Lady Michelle Obama leads Sunny, one of the first family's Portuguese Water Dogs, down the steps of the South Portico. President Barack Obama walks a short distance behind with Bo, the first family's other dog, and the official White House Easter Bunny. The theme of the official White House Easter Egg Roll in 2015 was #GimmeFive, which commemorated the fifth anniversary of the first lady's "Let's Move!" campaign by challenging the public to incorporate five new healthy habits into their daily routine, and share their positive lifestyle choices on social media. The event featured sports and fitness zones, cooking demonstrations, storytelling, appearances by costumed characters, musical performances, and classic seasonal activities such as an egg hunt and egg roll race. Performers at the event included rapper Diggy, girl group Fifth Harmony, pop duo MKTO, the cast of the Broadway musical "Newsies," “So You Think You Can Dance" all-star contestants, and entertainers from the classic children's television show "Sesame Street."

This photograph was taken by Matthew D'Agostino on April 6, 2015, during the official White House Easter Egg Roll. Here, First Lady Michelle Obama walks down the steps of the South Portico President Barack Obama walks a short distance behind with Sunny and Bo, the first family's Portuguese Water Dogs, and the official White House Easter Bunny. The theme of the official White House Easter Egg Roll in 2015 was #GimmeFive, which commemorated the fifth anniversary of the first lady's "Let's Move!" campaign by challenging the public to incorporate five new healthy habits into their daily routine, and share their positive lifestyle choices on social media. The event featured sports and fitness zones, cooking demonstrations, storytelling, appearances by costumed characters, musical performances, and classic seasonal activities such as an egg hunt and egg roll race. Performers at the event included rapper Diggy, girl group Fifth Harmony, pop duo MKTO, the cast of the Broadway musical "Newsies," “So You Think You Can Dance" all-star contestants, and entertainers from the classic children's television show "Sesame Street."

This photograph was taken by Matthew D'Agostino for the White House Historical Association on April 6, 2015, during the official White House Easter Egg Roll. Here, First Lady Michelle Obama leads Sunny, one of the first family's Portuguese Water Dogs, down the steps of the South Portico. President Barack Obama walks a short distance behind with Bo, the first family's other dog, and the official White House Easter Bunny. The theme of the official White House Easter Egg Roll in 2015 was #GimmeFive, which commemorated the fifth anniversary of the first lady's "Let's Move!" campaign by challenging the public to incorporate five new healthy habits into their daily routine, and share their positive lifestyle choices on social media. The event featured sports and fitness zones, cooking demonstrations, storytelling, appearances by costumed characters, musical performances, and classic seasonal activities such as an egg hunt and egg roll race. Performers at the event included rapper Diggy, girl group Fifth Harmony, pop duo MKTO, the cast of the Broadway musical "Newsies," “So You Think You Can Dance" all-star contestants, and entertainers from the classic children's television show "Sesame Street."

This photograph by Matthew D'Agostino was taken on July 1, 2015. In this photograph, Sunny, one of President Barack Obama's dogs, welcome visitors in the East Garden Room. Visitors to the White House that day were the first following the lifting of a 40 year restriction on cameras and photography. The restriction was lifted by President Barack Obama and First Lady Michelle Obama due to the emergence of cell phone cameras, advances in technology, and White House-related social media. The restriction had initially been enacted due to the severity of flash cameras on the priceless pieces of fine and decorative arts in the house.

This photograph shows two of the Johnson family dogs -- white collie Blanco and one of their beagles -- as they greet a tour group outside the South Portico on July 14, 1965. The tour group included the wives of Japanese Ministers of the Japanese Cabinet, in Washington, D.C. as part of the fourth meeting of the Joint United States - Japan Committee on Trade and Economic Affairs, led by President Lyndon B. Johnson.

This photograph shows two of the Johnson family dogs -- white collie Blanco and one of their beagles -- as they greet a tour group outside the South Portico on July 14, 1965. The tour group included the wives of Japanese Ministers of the Japanese Cabinet, in Washington, D.C. as part of the fourth meeting of the Joint United States - Japan Committee on Trade and Economic Affairs, led by President Lyndon B. Johnson.

This photograph shows two of the Johnson family dogs -- white collie Blanco and one of their beagles -- as they greet a tour group outside the South Portico on July 14, 1965. The tour group included the wives of Japanese Ministers of the Japanese Cabinet, in Washington, D.C. as part of the fourth meeting of the Joint United States - Japan Committee on Trade and Economic Affairs, led by President Lyndon B. Johnson.

This photograph shows two of the Johnson family dogs -- white collie Blanco and one of their beagles -- as they greet a tour group outside the South Portico on July 14, 1965. The tour group included the wives of Japanese Ministers of the Japanese Cabinet, in Washington, D.C. as part of the fourth meeting of the Joint United States - Japan Committee on Trade and Economic Affairs, led by President Lyndon B. Johnson.

This photograph shows two of the Johnson family dogs -- white collie Blanco and one of their beagles -- as they greet a tour group outside the South Portico on July 14, 1965. The tour group included the wives of Japanese Ministers of the Japanese Cabinet, in Washington, D.C. as part of the fourth meeting of the Joint United States - Japan Committee on Trade and Economic Affairs, led by President Lyndon B. Johnson.

This photograph shows two of the Johnson family dogs -- white collie Blanco and one of their beagles -- as they greet a tour group outside the South Portico on July 14, 1965. The tour group included the wives of Japanese Ministers of the Japanese Cabinet, in Washington, D.C. as part of the fourth meeting of the Joint United States - Japan Committee on Trade and Economic Affairs, led by President Lyndon B. Johnson.

This photograph is of a tour group outside the South Portico on July 14, 1965. The tour group included the wives of Japanese Ministers of the Japanese Cabinet, in Washington, D.C. as part of the fourth meeting of the Joint United States - Japan Committee on Trade and Economic Affairs, led by President Lyndon B. Johnson. Greeting the group is one of the Johnson family's beagles.

This photograph from the 2016 White House Easter Egg Roll was taken by Matthew D'Agostino for the White House Historical Association on March 28, 2016. President Barack Obama and First Lady Michelle Obama presided over the festivities, which included story time, an Easter egg hunt, games, and live entertainment. In this photograph, Mr. Obama blows the starting whistle on the annual Easter egg roll competition while Mrs. Obama cheers on the competitors on the South Lawn of the White House. Their two Portuguese water dogs, Bo and Sunny, are in the background, under the careful watch of White House Grounds Superintendent Dale Haney.

This photograph from the 2016 White House Easter Egg Roll was taken by Matthew D'Agostino for the White House Historical Association on March 28, 2016. President Barack Obama and First Lady Michelle Obama presided over the festivities, which included story time, an Easter egg hunt, games, and live entertainment. In this photograph, Mr. and Mrs. Obama cheer on participants in the Easter egg roll competition on the South Lawn of the White House. In the background, White House staff members including Dale Haney, superintendent of the White House Grounds, keep watch over the Obama family's Portuguese Water Dogs, Bo and Sunny.

This photograph from the 2016 White House Easter Egg Roll was taken by Matthew D'Agostino for the White House Historical Association on March 28, 2016. President Barack Obama and First Lady Michelle Obama presided over the festivities, which included story time, an Easter egg hunt, games, and live entertainment. In this photograph, Mr. and Mrs. Obama cheer on participants in the Easter egg roll competition on the South Lawn of the White House. In the background, White House staff members including Dale Haney, superintendent of the White House Grounds, watch over the Obama family's Portuguese Water Dogs, Bo and Sunny.

This photograph from the 2016 White House Easter Egg Roll was taken by Matthew D'Agostino for the White House Historical Association on March 28, 2016. President Barack Obama and First Lady Michelle Obama presided over the festivities, which included story time, an Easter egg hunt, games, and live entertainment. In this photograph, Mr. and Mrs. Obama cheer on participants in the Easter egg roll competition on the South Lawn of the White House.