Now here's a cat certainly living her nine lives without limit.

Grumpy Cat, the internet's most famous stern and disgruntled-looking cat, has earned around $100 million during the past two years. Despite her fortune, the cat is unfazed and has still retained her sour countenance.

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But then again - why would she want to change her angry demeanor? Her angry expression has earned for her more money than Hollywood superstars Cameron Diaz, Matt Damon and Matthew McConaughey. She has even surpassed the earnings of one of the world's top footballers, Christiano  Ronaldo, who earned a meager £27.1 million.

Grumpy Cat, whose equally adorable name is Tardar Sauce, has so far starred in ads, books, and even a movie since she shot to internet fame in 2012 through Reddit and YouTube videos. Despite never having tasted coffee (not that she would care too, really), Grumpy Cat is currently the endorser of her own lice of iced coffee called Grumppuccino.

Although Grumpy Cat has a perennial scowl on her face despite her new wealth, her owner Tabatha Bundesen is certainly laughing all the way to the bank.

"I was able to quit my job as a waitress within days of her first appearance on social media and the phone simply hasn't stopped ringing since," she admitted to Express.

Bundesen stated, however, that Tardar Sauce shouldn't be blamed for her permanent frown, since she really can't help it. Although Bundesen is pretty sure that her cat is happy, she always has a scowl on her face because she was born with dwarfism and an underbite.

Why wouldn't she be happy? After all, Grumpy Cat has gotten so famous that she simply had to get an agent to manage all her endorsements and appearances.

Ben Lashes, who calls himself a "meme manager" is responsible for making the cat a multi-millionaire. His clientele also includes other celebrity felines such as Keyboard Cat and Nyan Cat, and non-felines like Doge and Ridiculously Photogenic Guy.