Former President Barack Obama has announced the death of his Portuguese Water Dog Bo. On Saturday, the 59-year-old took to Twitter to post a series of old photos of Bo, while sharing the heartbreaking news and celebrating the pooch’s life.

“Today our family lost a true friend and loyal companion. For more than a decade, Bo was a constant, gentle presence in our lives—happy to see us on our good days, our bad days, and every day in between,” he tweeted along with a photo of himself and Bo running.

In a different post, Obama praised Bo’s good behavior at home despite living his life in the spotlight.

“He tolerated all the fuss that came with being in the White House, had a big bark but no bite, loved to jump in the pool in the summer, was unflappable with children, lived for scraps around the dinner table, and had great hair,” Obama wrote.

He added, “He was exactly what we needed and more than we ever expected. We will miss him dearly.”

In a separate post, Michelle Obama revealed Bo passed away following a battle with cancer. “This afternoon was a difficult one for our family. We said goodbye to our best friend—Bo—after a battle with cancer,” she tweeted.

“We are grateful for the love you showed him over the years. Please hug the furry members of your family a little closer tonight—and give them a belly rub from us.”

“Not Bo” became a trending topic on Twitter shortly after Obama’s announcement, with fans mourning the dog’s death and sending their condolences to the famous family.

“Not Bo!! My dogs Clipford and Stan and I send our deepest condolences to you, @MichelleObama and the girls!” one person wrote.

Another person noted that the dog was nearing an old age even though most people remember his puppy days at the White House.

“Awwww dang not Bo! I feel like we just got him, but he was at least 12,” the individual wrote.

Bo was adopted in 2009 and was a gift to the Obamas from the late Senator Ted Kennedy.

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