India, Oct. 15 -- Leonardo DiCaprio might be synonymous with Hollywood but he has also spent years speaking up for wildlife. In 2010, he joined WWF and launched a campaign called Save Tigers Now. Three years later, his foundation donated $3 million to help Nepal bring back its tigers. A 2015 study found that Nepal's tiger population rose from 121 in 2009 to 198 in 2013, an increase of about 63%. By 2022, that figure reached 355.

Over the past century, wild tiger numbers have fallen, and tigers are now considered endangered. The study says tigers face serious threats around the world, including habitat loss, poaching, and the illegal trade in tiger parts. The study examined Nepal's lowland Terai Arc Landscape, where Chitwan National Park ...