George H.W. Bush’s service dog pays respect by lying next to his casket in a heartbreaking pic

A touching image, shown below, of George H.W. Bush's service dog Sully laying by his coffin saying a final goodbye was posted to Twitter.

A heartbreaking image of George H.W. Bush’s service dog lying next to the 41st President’s coffin in Houston on Sunday was posted to Twitter by Jim McGrath. The image shows a mourning Sully lying down in front of Bush's coffin.

Sully is a specially trained golden labrador. Sully is named after former airline pilot Chesley "Sully" Sullenberger III the pilot who famously landed a damaged passenger jet safely on the Hudson River.

The photo was also shared on to the Sully's Instagram account on Sunday. It was captioned: "Mission complete."

His mission is not entirely complete. He will do one more task when he accompanies the casket to Washington, D.C. on Monday.

After his final task, Sully will return to the VetDogs Smithtown, New York headquarters. The VetDogs association released a statement saying he will spend the holiday season in New York.

He will later be transferred to the Walter Reed National Military Medical Center’s Facility Dog Program in Bethesda. Sully will join other canines to help wounded veterans as they undergo physical and occupational therapy.

The America’s VetDog tweeted a statement, saying: ‘America’s VetDogs is deeply saddened by the loss of President George H.W. Bush."

"Our condolences go out to the Bush family at this time."

George Bush's body will be transported by Air Force One from Texas on Sunday to Washington. There will be a full state funeral in his honor.

Since the aircraft will be temporarily renamed as it is only referred to as Air Force One whenever the sitting President is on board. For the occasion, it will be referred to as "Special Air Mission 41."

McGrath tweeted a picture of the plane and wrote, "Air Force One has arrived in Houston for what will technically be called "Special Air Mission 41" tomorrow and Wednesday."

The former President of the United States breathed his last on Friday, November 30, 2018. He died at his home in Houston, Texas.

The former president was in office from 1989 to 1993. He was surrounded by family and friends at the time of his passing.