This is just a stock image but it's not hard to imagine it being in a children's story. Besides, Scrooge McDuck is an existing character in a children's story that is a billionaire as a duck.
All squares are rectangles, but not all rectangles are squares.
In this hypothetical situation, if you can't imagine a fanciful depiction of a pig doing it, then it isn't a job. But the opposite isn't necessarily true. Just because you can imagine a fanciful depiction of a pig doing it doesn't necessarily mean it is a job, just that it could be.