Some populations are found above the Arctic Circle! It's also the most terrestrial of all North American ranids, the large group of "true frogs," which include the bullfrog and other common pond ...

Once the most abundant and widespread frog species in North America, leopard frogs were widely collected not only for dissection but for the food industry (frog legs) as well. However, massive ...

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 range runs from the tip of Chile, 5,500 miles up the coast western coast of South America, through Bolivia ... and a death-defying frog marching toward pools of glacial melt water.

Leopard frogs are endemic to North America but have been classed as endangered since 1999. The frogs were collected by the Oregon Zoo when they were eggs and released once they had matured.