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'World's smallest vertebrate' fits in the center of a dime

A tiny frog, paedophryne amauensis, found in the forests of Papua New Guinea claims the title of 'world's smallest vertebrate.'

The previous record holder was an acidic swamp-dwelling fish from Indonesia called Paedocypris progenetica. But with an average length of 0.3 inches from nose to butt, the tiny frog is just a bit smaller.

Read more: Tiny frog claims title of 'world's smallest vertebrate'