The Colombian authorities have announced they will declare deceased drug lord Pablo Escobar's herd of 'cocaine hippos' an invasive species as a way of tackling their growing numbers.
Escobar, who was shot dead in December 1993, bought four hippos for his Hacienda Napoles estate in the town of Puerto Triunfo in north west Columbia, which have now become a family of around 130.
Many of Escobar's other animals were captured and relocated after his death. However, the hippos proved difficult to catch and have multiplied in number.
