Amphibians can be defined by several factors. They are cold-blooded, live their lives on land and water, have scaleless and permeable skin, are without claws, begin breathing through gills and switch to breathing with lungs and skin, and lay eggs that require moisture. This includes frogs, toads, newts, salamanders and caecillians (limbless amphibians).

We began our amphibian week by discussing the differences between reptiles and amphibians.