Rubbery animation abounds when Tweety clobbers a bulldog with his bone in “A Gruesome Twosome” (released 1945). A few frames.
The dog pushes its head out of the dirt.
And looks at Tweety. These are consecutive drawings.
Manny Gould, Rob Scribner, Basil Davidovich and Bob McKimson are the credited animators on this.