The boom in population is believed to be a good sign for 2017, as 129 tigers died in 2016 due to poaching or accidents, the highest in a decade. The Terai arc landscape includes the fertile lowlands of the southern Himalayan and Shivalik foothills and north of Indo-Gangetic plains in Nepal, India, Bangladesh and Bhutan. It spreads over 49,500 sq.km and is home to 86 species of mammals, over 600 species of birds, 47 species of reptiles and amphibians, 126 species of fish and over eight million human beings.