Wild boars have become a hazard in Germany. The latest boar attack found four people hiding in a dumpster, desperately cell-phoning for help. The root of the problem seems to be a porcine population explosion caused by tighter hunting restrictions. Similar situations have developed in various corners of Asia, where the problem stems from the declining populations of the pigs' predators, like tigers and wolves.
These wild boars are the same species as the domestic pig. After a few generations in the wild, they change so radically that their bodies undergo a morphological shift: they become hairier and leaner, their snouts lengthen, and their backs take on the characteristic "razorback" ridge. The pose more of a threat to crops and livestock than to humans, but a few elderly people have died of boar attacks in the last few years.
On a related matter, I've been regaling folks over at Facebook with info about the grice, a cantankerous little breed of pig that went extinct about 80 years ago. Some claim my family name derives from this critter. It all seems relevant to my eating habits this holiday season.