Susan--even Jesus chased the money-changers from the temple and called religious leaders vipers and hypocrits. All of us have breaking points. But nonetheless, you are correct, Pig is not one of us, he is 2-dimensional and imaginary and is not wired like common mortals.
Pig should mix in a little phenolphthalein in Rat's drinks. Or perhaps Pig should recruit Jeffy to fix Rat's wagon, or better yet, Itchy and Scratchie. Itchy would really teach Rat a lesson...."The Itchy and Scratchy Shooooooooooooooow". He he he he he