Amphibians

Amphibians are vertebrates that include frogs, salamanders and caecilians, many with permeable skin closely linked to moist habitats. Their life cycles vary, but many begin as aquatic larvae before changing into adults. Skin, lungs and gills contribute to breathing in different ways. Some species remain aquatic, while others spend much of adult life on land. Eggs often require damp conditions or water, although breeding methods differ greatly. Most adults eat small animals, while larval diets can be quite different.