"Mission complete. #Remembering41", the caption read.
The dog is named after the airline pilot Chesley "Sully" Sullenberger, who landed a passenger jet on the Hudson River in 2009, saving all 155 passengers and crew on board.
Sully will accompany Bush's casket on the Monday flight from Houston to Maryland, CNN reported, citing a source familiar with the plans.
"As much as our family is going to miss this dog, we're comforted to know he'll bring the same joy to his new home, Walter Reed, that he brought to 41", the younger Bush wrote.
W Bush's service dog Sully guarding his casket has warmed hearts online.
Sully can perform a bevy of sophisticated commands, including answering the phone and fetching lost items as small as a credit card.
Washington to pay respects, bid farewell to George H.W. Bush
In this October 22, 2010 photo, Former President George H.W. Bush, left, and golfing great Arnold Palmer acknowledge the gallery at the Champions Tour golf tournament in The Woodlands, Texas. Trump and the first lady, Melania Trump, are scheduled to attend.
Bush received Sully in June from America's VetDogs, a nonprofit organization.
He said Bush was the first president he ever voted for and was "the first president to teach me and many of us that in a democracy sometimes you fall short", and how you handle that, "is just as important as how you win".
McGrath and the presidential library didn't immediately respond to requests for comment.
He was 94. Bush, who was president from 1989 to 1993, will lie in state beneath the soaring U.S. Capitol rotunda for a ceremony and public visitation from Monday through Wednesday. An invitation-only funeral service is set for Wednesday at Washington National Cathedral. Wednesday has been designated by President Trump as a national day of mourning, and most federal agencies will be closed with federal workers given the day off. The casket was flown in from Ellington Field Joint Reserve Base, a Texas Air National Guard base, aboard an aircraft that often serves as Air Force One.
The 41st president of the United States, who lived longer than any of his predecessors and possessed one of the most impressive resumes in American political history, died peacefully at his home in Houston, according to a source close to the family.
He is reportedly a big fan of the trading-card game, which pits wizards against creatures, and plays in tournaments. Seattle running back Chris Carson suffered a dislocated finger in the fourth quarter but wasn't deemed significant.
The International Committee of the Red Cross said it welcomed the announcement and would oversee and facilitate the exchange. Rebel official Abdel Kader al-Murtadha confirmed the deal, adding that he hoped it would be "implemented without problem".
The online drama popped off when Huckabee mocked Ocasio-Cortez as "looney" for comparing her election to the moon landing. We went to the moon, we electrified the nation, we established civil rights, we enfranchised the country.
CBC News Network will also broadcast the interactive special featuring Canadian astronaut Chris Hadfield. NASA and Roscosmos said all onboard systems were operating normally and the crew was feeling fine.
The subject of the musical , known for her own plentiful tweets, has yet to weigh in on West's faux pas. I am so defeated by this issue that I seriously question whether I want to work on stage anymore.
His 1-under 287 was one stroke better than Japan's Hideki Matsuyama , who shot a 3-over 75 to close out his tournament. Stenson almost rallied from a seven-shot deficit in 2016, only to finish toward the bottom of the pack past year .
Michel's extradition comes six years after his alleged involvement in the purchase of VVIP helicopters first surfaced in 2012. Given the sensitivity of the matter, James will be kept at the CBI headquarters and not be sent to judicial custody.
Across France, four people have been killed in accidents linked to the demonstrations and road blockades, and hundreds injured. A demonstrator watches a burning vehicle near the Champs-Elysees avenue during a demonstration Saturday in Paris .
Not long after she learned about her cancer, Strauss' friends set up a GoFundMe page in her honor to help cover medical costs. Source tells TMZ that she "took a turn for the worse" on Monday night after she'd been unconscious for a few days.
By simply observing the colour change, it is possible to identify the cancerous DNA with the naked eye within five minutes. And though this "methylscape" could serve as a biomarker for cancer , researchers didn't have a good way to detect it.
Skype to add real-time captions to calls
The new feature works for video and voice calls, and is available on Skype for Windows 10 , Android, iOS, Linux, and Mac. This does not remove the fact that the features will also come in handy for other users within the Skype community.
Cardi B announces breakup with Offset
One user on Twitter wrote, "So sad, but a part of me always knew that they were not going to make it for the long run". In a post on her Instagram page, Cardi B said things have not been working out between them for a long time.
Rudy Giuliani has no idea how the internet works
Keep that in mind as we travel back to Friday, when Giuliani tweeted some complaints about Special Counsel Robert Mueller . In January of 2017, Trump named Giuliani as his cybersecurity advisor .
Former Ukip leader Nigel Farage quits party
And Ukip deputy leader Mike Hookem was scathing about Mr Farage. 'He failed to get a vote through at yesterday's NEC. He said he was leaving UKIP because he is uncomfortable with the direction it has taken in recent months.
Stocks tumble amid China trade uncertainty
Defensive Utilities .SPLRCU eked out a 0.2 percent gain, the only one of the 11 major S&P 500 sectors in positive territory. The yield on the 10-year Treasury note fell to 2.91 per cent from 2.99 per cent late Monday, a large move.