Invasive 'Cocaine Hippos' Are Being Sterilized in Colombia

To deal with invasive hippos that were brought to Colombia by drug lord Pablo Escobar—and that threaten the country’s biodiversity—the nation’s government is sterilizing, exporting and euthanizing the animals

https://www.scientificamerican.com/article/invasive-cocaine-hippos-are-being-sterilized-in-colombia/