Other
All About Frogs: Life Cycle of a Frog
Understand the reproduction and life cycle of a frog from mating through spawn, eggs, tadpoles, and growing legs to the final frog. Nice details.
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.
BBC
Bbc: Nature: Wildlife: Common Frog
Use this site to learn all about the life of a frog. Read this detailed fact sheet and examine these photos for further information.
University of Wisconsin
University of Wisconsin: Amphibian Embryology Tutorial
This amphibian embryology tutorial takes an in depth look at the question "Why study amphibians?". Through this tutorial students will develop a better understanding of vertebrate development.
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
Nh Pbs: Nature Works: Colorado River Toad
Come and check out this educational resource featuring the Colorado River Toad. The content of this site includes information on this species' characteristics, range, habitat, diet, reproduction, and behavior.