Grumpy Cat (April 4, 2012 – May 14, 2019), born Tardar Sauce, was an American Cat who became an internet celebrity for her unique, perpetually "grumpy" facial expression. This distinct look, a result of feline dwarfism and an underbite, made her the subject of countless popular Memes and media appearances. Her enduring image captured a global audience, becoming a symbol of wry amusement online.