Sylvester- I Need You (1979)

You know, I used to watch a lot of Loony Tunes, and I have always felt kind-of bad for Sylvester. First of all, that Tweety has some powerful friends. How does a little annoying yellow bird trick a giant, burly, muscular bulldog into being his bodyguard? He must have Jerky Treats or Snausages or something hidden in his cage.
Secondly, why has nobody mentioned to that senile old lady that owns Sylvester that cat food is like 39 cents a can at the store? The old bag must keep forgetting to feed him, or he wouldn't continuously putting his life on the line for a chewy, sinewy (possibly homosexual?) old canary.