Bird
Reptiles
Mammals
Amphibians
Fish
Water (youngs) land (adults), wet skin, oviparous, gills (youngs), lungs (adults).
Land and water, dry scales, oviparous, lungs.
Land, feathers, oviparous, lungs.
Land and water, fur, viviparous, lungs.
Water, scales, oviparous, gills.