You’re looking at Noblella pygmaea, a native of Peru. It’s the smallest frog found in the Andes, and one of the smallest in the world. It lives at an altitude of 3000 metres above sea level, in the Manu National Park near Cuzco. The males measure little more than one centimetre long, and the females are just slightly bigger at about 12.5 mm; that “boulder” you see this one clinging to is actually someone’s fingertip. It also defies scientific expectations, since frog species living at altitude tend to be larger than their lowland counterparts.

One tiny critter…one big head-scratcher for amphibian specialists.

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