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.

When I got my first look at Boulenger’s backpack frog, I thought the poor thing was suffering from the world’s most unpleasant skin disease. The frog in this video appears to be wearing a cluster of ...