I don't know the exact history of this, but there is an island called Big Major Spot, just to the north of Staniel Cay. Big Major Spot is uninhabited (by humans) but has a small population of (formerly) domestic pigs and goats. Seems that someone had the idea that if they turned them loose, they'd care for themselves and then a bbq or pit-roast once in a while might just be in order. As the population seems stable, but not huge (& they seem to have been there a while) one can surmise this might just be what happens.

We went ashore to feel the pigs. We fed them left over (almost spoiled) veggies from our stores. At first we tossed them to the pigs and afterwards began hand-feeding them. The little while ones were quite gentle and polite, but the little brown ones and the larger ones, quite rude..still have a mark on my hand where one bit a chunk out.

Funny enough, we were on the beach there the next day with passengers and crew from a mega-yacht came ashore in their huge dingy to feed the pigs. They were feeding them spaghetti (imagine a hog with spaghetti hanging off it's head and ears..happy pig) with bacon. Kind of humorous actually to watch a pig eat bacon.