Pablo Escobar's Hippos
One of the most successful businessmen in history, Pablo Escobar made billions bringing cocaine to the United States and the world. In Colombia, Escobar had a huge estate that was park home and part theme park, with exotic animals brought in from around the world. When Escobar was killed by Colombian authorities, the state seized the estate and distributed the animals to various zoos and reserves — except for the hippos, and now they're a problem.