Pablo Escobar's Hippo Population Continues to Grow Unchecked.

Hippos that were once owned by drug lord Pablo Escobar have been multiplying in Colombia and are now considered an invasive species. The hippos, which were brought to Colombia in the 1980s, have no natural predators and are causing damage to the local ecosystem. Efforts to control their population have been unsuccessful, and some experts are calling for their removal.