Other
Amphibian and Reptile Conservation: Natterjack Toad
Description of the Natterjack Toad, including how to identify it, and its life cycle. It also provides a video [6:06] of an edition of the Living World with Lionel Kellaway, focussing on the natterjack chorus.
PBS
Pbs Nature: Frogs and Toads
Do you know how to tell the difference between a frog and a toad? This site provides interesting facts and information about this type of amphibian from where they live to what they eat and more.
Canadian Museum of Nature
Canadian Museum of Nature: Northern Leopard Frog
Here, the Northern Leopard Frog, a popular frog throughout North America, is described in succinct detail.