Sylvester is a cartoon character from the Warner Bros. cartoons. Sylvester is a tuxedo cat (bicolor) and is the main rival of Tweety Bird. He first appeared in Life with Feathers on March 24, 1945. He was created by Friz Freleng. Sylvester's name is a play on the word, "Felis silvestris" which is a scientific name for the wild cat species although Sylvester is a domestic cat. He was voted as #33 on TV Guide's list of 50 best cartoon characters along with Tweety. 