Wild elephants are eating leaves in the Garo Hills in Nalitabari, Sherpur, Bangladesh, bordering India. There is a wide variety of animal life in the wilderness areas of Bangladesh, even though it is one of the most highly populated countries in the world. Bangladesh is home to roughly 22 species of amphibians, 17 species of marine reptiles, 109 species of reptiles, 388 species of birds, 110 species of mammals, and 3 species of marine mammals.