There are hippos in Colombia, thanks to the notorious drug lord Pablo Escobar. BBC News William Kremer writes that the cocaine trafficker once built himself a zoo filled with exotic wildlife. Following Escobars death, his animals were relocated across the country — all except the hippos. There had initially only been four, but the creatures numbers have swelled up to 50, and possibly many more have escaped and are now flourishing in Colombias tropical climate. …