Scientists have braved 50C heat and venomous snakes to track down a "leopard-print ... found evidence of eggs and tadpoles for the first time. Investigating the frog's breeding behaviour is ...

Once the most abundant and widespread frog species in North America, leopard frogs were widely collected not only for dissection but for the food industry (frog legs) as well. However, massive ...

The relict leopard frog has the dubious distinction of being one of the first North American amphibians thought to have become extinct. Although the species was known to have inhabited more than 60 ...

Call it a grand-phibian. Scientists have unearthed a fossil of the world’s oldest tadpole in Argentina — a shock finding that could alter our understanding of amphibian evolution, experts say.

The discovery is helping to clear up a long-standing mystery as to when frogs and toads evolved their iconic two-stage life-cycle. "The research demonstrates that a tadpole stage followed by a ...

A 161 million-year-old fossil, linked to a line of extinct frog-like amphibians, is the oldest tadpole ever found. By Asher Elbein The metamorphosis of a frog from baby to adult is one of nature ...

The relict leopard frog has the dubious distinction of being one of the first North American amphibians thought to have become extinct. Although the species was known to have inhabited more than 60 ...

Tadpoles and adults of Notobatrachus degiustoi in a mid-Jurassic pond of Patagonia are seen in an artist's reconstruction. (Gabriel Lío) Researchers know frogs were hopping around as far back as ...