Internet Sensation Grumpy Cat -- Source of Multimillion-Dollar Empire -- Dies at Age 7Grumpy Cat, real name Tarder Sauce, gained global fame in 2012 when photos of her went viral.

Grumpy Cat, the adorably grouchy-looking meme machine kitty, has passed away. The family of the dearly departed catsaidshe suffered complications from a urinary tract infection. She died on Tuesday at the age of seven.

Some days are grumpier than others...pic.twitter.com/ws209VWl97

— Grumpy Cat (@RealGrumpyCat)May 17, 2019

Her world-famous expression was the result of a birth defect, and Grumpy's ownersparlayed her popularityinto a multimillion-dollar empire, with merchandise, books and a Lifetime movie. As you might expect, tributes flooded in following the news of her passing.

goodbye grumpy catpic.twitter.com/2LmoYXM1Rr

— shitty watercolour (@SWatercolour)May 17, 2019

Hope they meet in heaven#RIPGrumpyCatpic.twitter.com/qdPlt7poGb

— Greeshma Megha M.S (@GreeshmaMegha)May 17, 2019

Thank you, Grumpy Cat, for understanding@OscarTheGrouchlike no one else can.https://t.co/6jndLd1Enjpic.twitter.com/j8PrUG39kh

— Sesame Street (@sesamestreet)May 17, 2019