he cost of maintenance for the zoo and the animals was too expensive for the government, so it was decided that most of the animals would be donated to Colombian and international zoos. There still are bison, zebras, a rare goat and one ostrich. Escobar's hippopotamuses have become feral, living in at least four lakes in the area and spreading into neighbouring rivers. Contact between the hippos and local fishermen has led to calls for the hippo population to be culled. By 2011 there were at least 30 animals wild in the countryside - the number of hippos makes it difficult to find zoos into which they can be resettled.