The hippos are descendants of a small herd imported by drug kingpin Pablo Escobar in the 1980s. — AFP/File There are fears that the 166 hippos that were owned by drug lord Pablo Escobar in the 1980s may become feral, so Colombia is planning to kill some of them in an attempt to manage their numbers. Environment Minister Suzanna Mohammed said twenty would be sterilized, some would be taken abroad and “a few” would be executed. Experts have been trying to control the hippo population for years. Escobar imported hippos for his private zoo Hacienda Nápoles. They were left to