Figure 1: Categories of Amphibians
Figure 2: Frog Development
Video 1: All About Amphibians: Tadpoles, Frogs, and Salamanders (2:33)
Video 2: A Look Inside This See-Through Frog (1:07)
Video 3: Developing Egg Cells (1:27)
Video 4: Newt Sex: Buff Males! Writhing Females! Cannibalism! (3:37)
Video 5: Animals With Backbones (2:01)
Video 6: What's the difference between an amphibian and a reptile? (1:42)