If you, like me, find yourself curious about hippos after his video, Wikipedia is of course a great destination. Therein you will learn, if you read far enough, that Pablo Escobar’s private animal collection included four hippos — animals that the Columbian government found logistically impossible to seize after the drug lord’s downfall, so they left them unattended on the estate. By 2007, the population had grown to 16, and is presumably larger still today. However implausible, it pleases me to think of the drug lord’s river horses spreading gradually northward, like the menacing killer bees of my youth.