Pablo Escobar’s 4 pet hippos were unable to be removed from his Colombian estate and were left to fend for themselves. They have since thrived in local rivers and grown to a population of ~100 hippos. The are the only wild hippos outside of Africa. – WTF Fun Facts
Source: https://www.npr.org/2022/01/13/1072903214/the-debate-about-pablo-escobars-hippos