Jimmy Fallon is mourning the death of his dog Gary, a beloved golden retriever who made appearances on his late-night show.

"Gosh, we miss you so much," the "Tonight Show" host wrote, paying tribute to his golden retriever of over a decade.

Jimmy Fallon is mourning the death of his dog, Gary.

Shortly after Kelly Osbourne shared her final goodbyes to their family dog, Jimmy Fallon announced the death of his furry ...