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Angry cat' amasses huge social media following due to his seemingly permanent grumpy expression

Tartar Sauce aka Grumpy Cat made over $100 million by 7 years old. : r/motivation

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Internet Celebrity Grumpy Cat Is Not Impressed by TIME's Photo Shoot

Weird-looking cat Wilfred takes internet by storm after video goes viral

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Viral Star Grumpy Cat Passes Away, Is Memorialized In Memes - Tubefilter

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