The first short to pair Sylvester & Tweety was also the first short to win an Oscar for Warner Bros, breaking the streak MGM had going thanks to Tom & Jerry. Which is interesting because, in some ways, the Sylvester & Tweety series was very similar to Tom & Jerry. At least in terms of the basic structure of a cat chasing after a cute little critter. Also, the cat being named Thomas and the human woman who scolds the cat and hits him with a broom are other similarities in this first entry. Obviously there's much more to both series that separates them but there seemed to be something about this premise they both had in common that pleased Oscar voters back then as Tom & Jerry won a bunch of them and Sylvester & Tweety won a couple.
The story here is pretty basic. Sylvester (called Thomas here) catches Tweety outside in the snow. But before he can eat the bird, his owner catches him and brings adorable little Tweety inside. This doesn't stop the cat, who tries repeatedly to get at the bird with comical results. Tweety is much more aggressive (and Jerry-like) in defending himself against Sylvester in this first short. This is a good start to a series that would get much better once Sylvester developed his own personality and Tweety's was fleshed out some more. As it is, it's a funny short with nice animation, music, and voicework. I'm not sure it deserved the Oscar win but the Academy probably wanted to give a win to someone besides MGM or Disney that year and WB's Looney Tunes were screwed out of wins many other times.