Tardar Sauce, aka The Grumpy Cat, was a mixed breed defined by feline dwarfism and an underbite that gave him an always grumpy expression. He became a very popular internet meme source due to his funny-looking appearance and very cynical images were created with his grumpy expression. Sadly, The Grumpy Cat was taken away from us in May 2019, after 7 years of life. Lil Bub was a perma-kitten that suffered from extreme feline dwarfism displaying a smaller lower jaw and limbs than the rest of his body, and several other genetic mutations like extra digits (toes). Because of the smaller lower jaw, his tongue was always hanging out, making him look dumb. Lil Bub was also an international meme star, where his appearance led to creating memes with captions targeting dumb things or dumb behavior, but at the same time, he was a symbol of unconditional love. Regrettably, Lil Bub was also taken from us in December 2019, aged eight years old, marking 2019 as the end of an era in the cat meme world