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.

The relict leopard frog has the dubious distinction of being one of the first North American amphibians thought to have become extinct. Although the species was known to have inhabited more than 60 ...

as it required controlling invasive bullfrog populations that prey on the leopard frog. The larger size of bullfrogs has earned them invasive species status in western North America, despite being ...

Imagine being trapped in a block of ice, your heart stopped cold, your body as stiff as glass, and yet knowing you will wake ...

The metallic poison frog, active during daytime hours, has a long-lasting trill, or call, of 21–45 notes. While perched on ...