As for the title. Make it so that butcher and eat what are usually considered "pet animals" isn't unacceptable and/or illegal, a bit like guinea pigs on the Andes, or dogs in Asia.
I have eaten (and enjoy them) horse meat, rabbit, snails, little lambs, little pigs, plus all of French "charcuterie" I have been able to (living at the French border). Not so many years ago Tolosa (a Gipuzkoan village) was famous for serving cat whenever you asked for rabbit*... OTOH both cats and dogs are carnivore, so no really suitable as meat cattle, but count on me for trying...
*You know small village rivalries, after the SCW that was true probably in all of Gipuzkoa and not only in Tolosa...
You can't really compare dog and cat meat to guinea pig, as guinea pigs aren't carnivorous and were originally domesticated as a food source. Eating guinea pig is akin to eating rabbit.
Still, if I try to eat a guinea pig, I can get arrested for Animal Abuse.