An Indian billionaire's son offered on Tuesday to take the so-called "cocaine hippos" descended from those introduced to Colombia by drug kingpin Pablo Escobar, rather than have the animals killed.

With 80 hippopotamuses in Colombia’s Magdalena River basin authorised for lethal removal, Anant Mukesh Ambani, Executive Director, Reliance Industries Limited, and Founder of Vantara, one of the world...