BEIJING , June 10 -- Ever wondered why frogs have bulging eyes, or what makes them croak? Now you can hop down to the American Museum of Natural History in New York to find out.

Back by popular demand - the exhibit - named "Frogs, A Chorus of Color" showcases one of the largest such collections in the world.

The collection houses frogs from across the globe.

This green and black poison frog is native to Nicaragua and Colombia.

But he feels right at home here in the frog vivarium - a mock up of its natural habitat with waterfalls, ponds and trees.

The poison dart frog is known as nature's "touch-me-not."

One touch of this scarlet dart could kill. Some species of frogs in the wild carry enough poison to kill ten humans.

In their natural habitat, the frogs eat poisonous insects distilling the toxins into a concentrated form they could then secrete if threatened.

But lunch for these frogs is one of fruit flies and crickets, rendering them mostly harmless.

Visitor Melinda Insana said, "I think that frogs are something that kids always know, you know they know a lot about, but they don't know about the different types of frogs that exist, and this is the perfect opportunity to really learn about all the different sizes and shapes and colors."

According to the curator, nearly one third of amphibians are threatened worldwide. Frogs make up 88 percent of that group.

But all the species in the exhibit have been bred in captivity to protect wild populations.

"Frogs, A Chorus of Colors" is open to the public until next January