After going viral in 2012 and ruling the Internet as one of the first — and most prominent — social media pet stars, Grumpy Cat died on May 14, leaving behind 2.7 million Instagram followers and fans ...

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