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 ...

Researchers know frogs were hopping around as far back as 217 million years ago. But exactly how and when they evolved to begin as tadpoles remains unclear. This new discovery adds some clarity to ...

The largest of all North American frogs, this giant can grow to a length of 8 inches or more and weigh up to 1.5 pounds. Even the tadpoles of this species can reach 6.75 inches in length.

It is an aquatic creature; born as a tadpole, it grows to adulthood in the water. Although it’s a close relative of the Goliath bullfrog, the biggest in the world, the adult Togo slippery frog ...