During his time at his estate, Haceienda Napoles, Escobar collected many things including two hippopotamuses that he kept in a private menagerie. He was fascinated by these big lumbering creatures and sometimes treated them better than humans. After his death, the Colombian government decided that these two Hippo's were too difficult to catch and move, so they left them to roam free on the estate. By 2007, these two hippo's multiplied to 16 and had taken to roaming the area by the Magdelena River for food. As of early 2014, the hippo population grew to 40, by 2018 to 60 and by December 2020 there were an estimated 90 to 120 hippo's that cover an 870 square mile area.Neotropical Otter, Specaled Caiman and various species of turtles including the endangered Dahl's Toad-Headed Turtle not to mention various species of fish. There is also the threat of attack on humans since hippo's can be very aggressive when protecting their offspring and "home turf". In 2009, two adults and one calf left their herd, attacked humans and killed cattle. Let me guess, the attack must have been unprovoked.....NOT! One of the adults name Pepe was killed by hunters under the authorization of the local authorities. When a photo of the dead hippo became public, it caused considerable controversy among animal rights groups both within the country and abroad, and further plans of culling ceased. Human's always amaze me. When in doubt, start killing off the animals that cause a problem.