This Mystery is a case study in biodiversity using the frogs of North America. In the activity, Who’s Calling?, students learn to identify frogs by their unique calls and investigate which of two locations has a greater variety of frogs.

This week, we talk about reptiles and amphibians, and have a very special guest: a real, live horned lizard!

Learn more about the American bullfrog!

Learn more about the blue poison dart frog!

Learn more about the giant waxy tree frog!

Around the world, frogs are in trouble.

Join Chelsea Mckinney in the Appalachian Mountains to visit Canaan Valley National Wildlife Refuge and learn about the tiniest animal to date on the Conservation Connect Series, the endangered Cheat Mountain Salamander.

We wade into a Vermont pond with herpetologists Jim Andrews and Kate Kelly! We also get a preview of the new Earth Rangers podcast.

Dive into a toad hollow with bufologist and charming human Priya Nanjappa, who is a wealth of knowledge and a font of affection for toads.

Amphibians change dramatically throughout their lives. Check it out!

A group of ectothermic (cold-blooded) vertebrates who usually have an aquatic larval state and then morph into an air-breathing, land-dwelling adult.

Peruvian poison frogs mimic, or look like, other poison frogs that live in the same area. But they don’t just look like one other species. Depending on the location, frogs of this species may mimic one of many other species of poison frog.