The question: Why is "Je" sometimes written as "Ze" (and other words with similar sounds)
The context: Recently, I have been reading a graphic novel aimed at kids in which a kitten gets lost and is talking to himself trying to make his way home.
However, instead of saying "je", he says "ze". For example: "Ze veux rentrer à la maison"
And instead of "manger", he says "manzer". For example: "Z'ai bien manzé"
I could not find anything on the internet about this and was wondering if this was some sort of dialect or something else.