Pablo Escobar's 'cocaine hippos' are good for environment, scientists say

Pablo Escobar's 'cocaine hippos' could actually be doing some good.

The descendants of the pets the drug lord infamously kept on his property in Colombia have previously received something of a bad reputation due to their feral nature.

But now scientists are holding up their swelling numbers as an example of how a species can thrive in a new environment.

So what are they so special?

Find out in the video above.

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