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The planet's grumpiest animals

Photos Logo Photos | Slide 1 of 42: SAN FRANCISCO, CA - NOVEMBER 21: Grumpy Cat appears at Lifetime's Grumpy Cat's Worst Christmas Ever event at Macy's Union Square on November 21, 2014 in San Francisco, California.

The world-famous Grumpy Cat headlines this gallery of miserable animals. But he's far from alone in mastering the indignant look. 
© Steve Jennings/Getty Images for Civic Entertainment Group
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