 | Pablo Escobar imported four hippos in 1981 for a private zoo at his hacienda near Medellín. After his drug empire ended, the other animals were removed, but the large and unpredictable hippos were ignored and have been breeding in the wild ever since. They now number 80 or more.
The ecological impact of Escobar's hippos is still largely unknown.  |
 | Hippos have a lifespan of 50 years and spend most of their day under water in groups. They are notorious for being territorial and extremely dangerous. They are one of the most aggressive animals on the planet. |
