The gastric-brooding frog: how to bring a species back from the dead – video

Australia's gastric-brooding frog was discovered in the 1970s but by the early 1980s was classed as extinct. However, this remarkable frog, which projectile-vomits its young after gestating them in its stomach, is the subject of ground-breaking research at the University of New South Wales to recreate an extinct species.

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