Business Insider reports that since the 1980s, wild boar numbers have exploded across the world.
In parts of Germany and in Japan, Eurasian wild pigs contaminated with nuclear radiation are running around.
Growing numbers prompted the building of a wall between Denmark and Germany to secure Denmark's billion-dollar pork industry.
They are carriers of swine flu, and in the US, they're thought to be responsible for more than $1 billion of damage every year.
The boars are tough, too.