Just as his star is shining brightest, Uggie the movie dog is hanging up his collar. The sweet-faced Jack Russell Terrier became the four-legged breakout film star of 2011, thanks to his role as the convincingly faithful companion to Jean Dujardin’s down-and-out character in The Artist. “It’s a sad, sad day in the animal kingdom," says Michelle Profis at Entertainment Weekly. Uggie is "arguably one of the most adored pooches of all time.”

Tributes to Uggie the dog