There's also Cock Ale, so maybe something similar could be done with a hedgehog?:
"Take ten gallons of ale, and a large cock, the older the better; parboil the cock, flay him, and stamp him in a stone mortar till his bones are broken (you must craw and gut him when you flay him); then put the cock into two quarts of sack, and put it to three pounds of raisins of the sun stoned, some blades of mace, and a few cloves; put all these into a canvas bag, and a little before you find the ale has done working, put the ale and bag together into a vessel; in a week or nine days time bottle it up; fill the bottle but just above the neck, and give the same time to ripen as other ale."
I had to read that twice to find out that you add whatever remains of the cock to already mostly fermented ale, instead of fermenting the meat itself from the start which sounded like a terribly dangerous pasttime. Still, you'd have to be certain that there is already sufficient alcohol in the pre-fermented ale to keep any dangerous bacteria from gaining a foothold during the rest of the fermentation process.
In any case, fermenting hedgehogs sounds like a waste of a completely fine animal.
We have a resident hedgehog in our garden, and it is a great asset that keeps snail and slug populations down.