Pablo Escobar's ‘Cocaine Hippos’ 'Sterilized' After Bringing Threat to Humans; Colombian Government Makes Cocaine Hippos Infertile Due to Alarming Population

The "Cocaine Hippos" by drug lord Pablo Escobar are now being sterilized by Colombia's wildlife services after the 80-strong herd presented a potential danger not only to the country's environment but also to its people