Sylvester and Tweety had only been co-starring for a few years by this point, but Granny appears to be the prototype for the current - if unrealistic - image of the senior citizen kicking booty. As a cat lover, I've always wondered why Sylvester has to suffer so much in these cartoons, even if he's a sinister predator. But in "Canary Row", he suffers at the hands of Tweety, Granny, and even the desk clerk. Will that feline ever get what he wants?! Anyway, it's a pretty funny cartoon. Tweety is sort of the epitome of a facade hiding something nasty.
Watch for a sign advertising "Friz" (Freleng, that is).