Smaller than a penny, two newly discovered frog species are considered the smallest ever found. The pipsqueaks live in Papua New Guinea and run about 0.4 inches (8-to-9 millimeters) in length.
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World's Smallest Frog Found—Fly-Size Beast Is Tiniest Vertebrate
World's smallest frog, Paedophryne amauensis, found in New Guinea
World's smallest frog — tinier than a penny — discovered
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ScienceShot: The Smallest Frog in the Old World, Science
Pictures: Pea-Size Frog Found—Among World's Smallest
World's smallest frog, Paedophryne amauensis, found in New Guinea
ScienceShot: The Smallest Frog in the Old World, Science
No, wait, THIS is the world's smallest frog
The Localist: Southern Sydney - Concrete Playground
World's smallest frog discovered - BBC News
UTA researcher part of team that discovered new — and threatened