Grumpy Cat aka Tardar Sauce passed away on Tuesday, May 14 due to complications from a recent urinary tract infection. Grumpy Cat became an internet sensation after pictures of her constant annoyed facial expression became the source of thousands of memes that became wildly popular at the end of 2012 and beyond.

Tardar Sauce aka Grumpy Cat passed away on Tuesday, May 14 at the age of seven due to complications from a recent urinary tract infection. Grumpy Cat became an internet sensation after pictures of her constant annoyed facial expression became the source of thousands of memes that became wildly popular at the end of 2012 and beyond. 

Here are some of the saddest, funniest, and most heartfelt memes and reactions to the most famous cat on the internet. R.I.P. Grumpy Cat, I hope you truly hate it up there. Check out Know Your Meme's Tribute at the bottom. 

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

— Grumpy Cat (@RealGrumpyCat) May 17, 2019

And now his watch is ended #GrumpyCatpic.twitter.com/K2PtR9mhwk

— Tyrion Lannister (@GoT_Tyrion) May 17, 2019

Hope they meet in heaven #RIPGrumpyCat  pic.twitter.com/qdPlt7poGb

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

pic.twitter.com/HyPQfIAlPi

— Christian Johannesén (@phatseejay) May 17, 2019

Thanks for the laughs, the memes & for just being a rad kitteh. pic.twitter.com/036bBz3vl8

— Brent Davidson (@Brentus88) May 17, 2019

pic.twitter.com/OZGiZMBRjk

— James Tiberius (@mermaiddafakka) May 17, 2019

Grumpy Cat is up with Me in heaven for eternity and he's still so fucking grumpy.

— God (@TheTweetOfGod) May 17, 2019

Me logging on to Twitter this morning to find out that Grumpy Cat has passed away :( pic.twitter.com/175FcJVSDE

— Nick Horton (@itsnickhorton) May 17, 2019

F to pay respects to "Tarder Sauce", aka "Tard" aka "Grumpy Cat" who has left us all. I bet he purred a lot. Our hearts are with you @RealGrumpyCat family. pic.twitter.com/vGnQ2fVSnD

— Wholesome Memes (@WholesomeMeme) May 17, 2019

in honor of grumpy cat I will be looking insanely ugly today. it’s bc I’m honoring the fallen not bc that’s just how I look

— The De Blas Boys (@KrangTNelson) May 17, 2019

GRUMPYCAT DIED AND I AM VERY SAD pic.twitter.com/GTSVpk5a7A

— Lola of Lolipop™ (@Lolipop_Soda) May 17, 2019

first day without Grumpy Cat pic.twitter.com/LXcMSxJOBJ

— echelon (@EchelonWinter) May 17, 2019

R.I.P. Grumpy cat. :'( pic.twitter.com/kzKxYR9zlW

— Mikuláš Peksa (@vonpecka) May 17, 2019

1. Grumpy cat was a she. 2. Her owner was formerly a 29-year-old waitress before her cat made her a fortune. One report estimated she generated $100 million from her pet’s appearances https://t.co/GpkDBokR6lpic.twitter.com/zvf8kGEpbG

— Alyson Shontell (@ajs) May 17, 2019

Grumpy Cat is dead. R.I.P. pic.twitter.com/UoQtyNLSkh

— Hosermes (@Hosermes) May 17, 2019

Me seeing Grumpy Cat trending: oh god... please dont what i thin..
twitter: Grumpy Cat died
me: pic.twitter.com/NRhxN5tkDg

— Eren (@Erenexz) May 17, 2019

rest in peace #GrumpyCatpic.twitter.com/2dTgFQ6khm

— ArlingtonBlackBear (@BlackArlington) May 17, 2019

No parent should ever have to bury their child https://t.co/ZHq2aivRTe

— eBaum's World (@ebaumsworld) May 17, 2019

I love u grumpy cat pic.twitter.com/nmPISUGp3m

— tatianna (@gremIing) May 18, 2019

Take a look back at how #GrumpyCat became such an iconic part of internet history:https://t.co/aGn6y7K8mOpic.twitter.com/s9oX8oD0Yn

— Know Your Meme (@knowyourmeme) May 18, 2019