The African clawed frog is used as a model organism for biological research because of its close evolutionary relationship to humans, and because early development occurs externally, allowing ...

The development of hair was of central importance for the evolution of mammals and, thus, also of humans. However, the evolutionary origin of the genetic program of hair was previously unknown. An ...

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 ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Paleontologists ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Paleontologists working in Patagonia have unearthed the oldest-known ...

Australian tree frogs today make up over one third of all known frog species on the continent. Among this group, iconic species such as the green tree frog (Litoria caerulea) and the green and golden ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists have discovered evidence of a prehistoric species of amphibian that could be the precursor to modern species − and they ...