Sylvester J. Pussycat, Sr. is a fictional character, a three-time Academy Award-winning anthropomorphic cat who appears in more than 90 Looney Tunes and Merrie Melodies cartoons made from 1945 to 1965, often chasing Tweety Bird, Speedy Gonzales, or Hippety Hopper. The name "Sylvester" is a play on silvestris, the scientific name for the domestic cat species.