Following the death of Barack Obama's dog, Bo, the former U.S. president has shared the most heartbreaking tribute to his "true friend and loyal companion."

Taking to social media on Saturday, the Obama family confirmed that Bo — a Portuguese water dog — died from cancer.

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Sharing several photos of Bo, the former president said the fluffy dog had been a "constant, gentle presence in our lives—happy to see us on our good days, our bad days, and everyday in between."

Referencing Bo's stint in the White House with the Obama family, Barack added that he "tolerated all of the fuss" that came with living there and "lived for scraps around the dinner table."

Michelle Obama shared a similar tribute to their furry family member, reminiscing about some of Bo's finest moments in the country's highest office.

"He was there when Barack and I needed a break, sauntering into one of our offices like he owned the place, a ball clamped firmly in his teeth," she wrote. "He was there when we flew on Air Force One, when tens of thousands flocked to the South Lawn for the Easter Egg Roll, and when the Pope came to visit."

"I will always be grateful that Bo and the girls got to spend so much time together at the end," wrote Michelle, before urging people around the world to "hug the furry members of your family a little closer tonight—and give them a belly rub from us."