This here is the one character of mine that is naturally fat and of course this is her feral form.

My plump, Yellow Lab, Faith. In regards to her feral form's life, at one point a baker unofficially adopted her but treated her well, and obviously living with such a kind man, would leave a pup with quite a belly.

In case you're wondering about the background that was more the decision of the artist  ReggieBrowning but we could say maybe she accidentally ate something with a substance that is the canine form of a hallucinogenic drug.