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.

Have you ever wondered how city life affects animals like frogs? A new study reveals that urban Túngara frog tadpoles develop faster —but end up being smaller — than tadpoles from forests, probably ...

Frogs, like butterflies and salamanders, have what is called a "bi-phasic life cycle." They undergo metamorphosis to grow from their larval stage, as a non-reproductive tadpole that swims underwater, ...

A photograph of a giant, green-and-yellow tadpole longer than a human hand turned up in an X post on Feb. 12, 2025. At the time of this reporting, the post had received more than 296,000 views. At the ...

Young frogs and toads, after they first hatch from eggs, are called tadpoles. Over the next two weeks they change dramatically, called metamorphosis. First, tadpoles grow back legs, then front ones.

Quick Take Boulenger’s backpack frog carries eggs in a dorsal pouch on its back instead of dropping them into water. This ...

The world’s amphibians are in trouble. Because of their sensitivity to climate change, habitat loss, and pollution, they may be the canary in the coalmine for the nascent anthropogenic mass extinction ...

LOS ANGELES — The Los Angeles Zoo has released 450 tadpoles and 193 subadult southern mountain yellow-legged frogs into the streams of the San Gabriel Mountains in an effort to restore the species ...

Some tadpoles don’t poop for the first weeks of their lives. At least, that’s the case for Eiffinger’s tree frogs (Kurixalus eiffingeri), scientists report September 22 in Ecology. Eiffinger’s tree ...

With 8.2 billion people in the world, cities are constantly expanding, rapidly altering the environment. Animals that undergo complete metamorphosis, such as frogs, may face bigger challenges as they ...