Wild Boar

These aggressive, portly-but-fast-moving animals are fierce and come equipped with razor-sharp tusks, but what’s perhaps most dangerous about them is the environmental destruction they cause. “I’ve never seen any one species that can affect so many livelihoods and resources,” Michael Bodenchuk, the state director of Texas Wildlife Services, told Scientific American. The USDA is spending $20 million to try and slow the spread of these animals, who have spread to 39 states and are only proliferating further.