With the passing of beloved viral cat Colonel Meow, the Internet has lost another great meme. TIME looks back on other famous celebrity cats that have passed away — or moved on to another one of their nine lives — including Keyboard Cat, Nyan Cat, and Orville the “helicopter cat.” Combined, they have garnered more than 142 million views on YouTube and will live on in the hearts of fans and on the web forever.
WATCH: A Tribute to Internet Cats Lost Through the Years
RIP Colonel Meow and all the fallen felines of Internet fame