Amphibians are cold-blooded animals that can live both in the water and on land. When we think of amphibians, frogs and toads instantly jump to mind. Usually, we think of frogs as being quite small.

As a canopy of stars unfurled across the landscape of Namibia, a “golden” creature sat in a shallow pond. The animal’s size and “aggressive” nature made it easy to spot. When scientists found the huge ...