From The Guardian:
Apparently, hippos can hold a lot of coke in their, um... never mind.
They have been on the run for two years, and finally, one of them has been caught.
But how, you may ask, why, you may ask?
The hippos were damaging crops. The hippos were pets of the old cocaine king Pablo Excobar's.
"The mammals had been living wild in a tropical valley after escaping almost three years ago from an exotic menagerie which Escobar assembled during his heyday as a billionaire drug trafficker."