Panamanian golden frog toadlet

A Panamanian golden frog toadlet is seen along with its mother at the Bronx Zoo World of Reptiles.

Rain frog (Pristimantis genus)

This image shows a species of rain frog (Pristimantis genus) potentially new to science that was discovered in the hills of Tacarcuna, Colombia. Ten new species of amphibians -- including three kinds of poisonous frogs and three transparent-skinned glass frogs -- have been discovered in the mountains of Colombia, conservationists said.

Gopher frogs

Two gopher frogs are shown at the Audubon Zoo in New Orleans.

A waxy monkey frog

A waxy monkey frog sits on a branch while on exhibit at the Museum of Discovery and Science during a preview. The traveling exhibit which runs from May 22 to Sept. 7, features an assortment of exotic live frogs from around the world.

Phyllobates terribilis (frogs)

Phyllobates terribilis are seen in an exhibit at the Cali Zoo April 29, 2008. Colombia is home to the world's second largest number of frog species.

Rare species of Indonesian frog

The discovery of a rare species of Indonesian frog, seen here, that breathes without lungs could shed light on how evolution works.

Rare frogs bred in New Zealand

A rare and threatened species of tiny frog has been found breeding in a New Zealand animal park, meaning its future may now be more secure. The 13 finger nail-sized Maud Island froglets were discovered clinging to the backs of full-grown male frogs at the Karori Wildlife Sanctuary in the capital Wellington. The frogs are normally found only on two islands in the Malborough Sounds region of New Zealand's South Island.

Scientists find 'Devil Toad' fossil

A frog the size of a bowling ball, with heavy armor and teeth, lived among dinosaurs millions of years ago — intimidating enough that scientists who unearthed its fossils dubbed the beast Beelzebufo, or Devil Toad.

But its size — 10 pounds and 16 inches long — isn't the only curiosity. Researchers discovered the creature's bones in Madagascar. Yet it seems to be a close relative of normal-sized frogs who today live half a world away in South America, challenging assumptions about ancient geography.

The discovery, led by paleontologist David Krause at New York's Stony Brook University, was published Monday by the journal Proceedings of the National Academy of Sciences.

"This frog, if it has the same habits as its living relatives in South America, was quite voracious," Krause said. "It's even conceivable that it could have taken down some hatchling dinosaurs."