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Uggie, the plucky Jack Russell whose co-starring performance in “The Artist” (2011) earned him the Palm Dog and Golden Collar awards, died in Los Angeles on Friday after a battle with a prostate cancer. He was 13.

Born in California, Uggie was rejected by his first two owners for being too wild, and was headed for the pound when the animal trainer Omar Von Muller intervened. After some intensive work, Uggie’s inner talent revealed itself, landing him roles in “Water for Elephants” and “The Artist,” where he played the spunky, heroic sidekick to Jean Dujardin, who won the best-actor Oscar for his role. After a round of appearances on talk shows, Uggie went on to become Nintendo’s first spokesdog.

Mr. Muller confirmed Uggie’s death, telling The Associated Press that Uggie had been euthanized after suffering from a tumor, and would be buried in Mr. Muller’s backyard. “Thank you for your support,” Mr. Muller wrote on Facebook. “I will not be reading any comments for a while as it is too painful at the moment.”