The main reason for declining elephant population is destruction of elephants habitat and food resources by humans.

At around 300 BC, when Alexander the great came to conquer Bengal—then known as Ganga Rashtra, meaning Nation on the River Ganges, alias Gangaridai—he abandoned the idea of going further considering the military strength of the then ruler.

Elephants were abundant in Bangladesh even a century ago. Its number has dropped down to 200 to 350 presently, according to the forest department