There have been many cartoons in which Sylvester unsuccessfully tries to eat Tweety, but "I Taw a Putty Tat" is significant in that it's the first appearance of Hector the Dog. Personally, I can't figure out why the woman never realized that Sylvester was eating her canaries; my family has owned many cats over the years, but we've never owned birds, lest the cats eat them like Sylvester always tries to do. Anyway, a great cartoon, with Mel Blanc and Bea Benaderet doing neat voices.

Hector. The Trojan prince who fought in the Trojan War. When Homer came up with that name for The Iliad (in Greek, it means "holding fast"), he probably never imagined that it would one day get applied to a bulldog in a cartoon.