D 1.2 il sistema Terra parte terza la vita nell'idrofera e litosfera
Scutiger boulengeri is a species of toad in the family Bufonidae. It is found in Nepal, India (Sikkim) and western China. A healthy population has been found at an elevation of 5,270 m (17,290 ft) in one of the lakes in the Gurudongmar Lake complex in Sikkimese Himalaya. This is one of the highest elevations where amphibians have ever been recorded.