amphibians of all sizes would need different terrariums. tree frogs like to climb and can escape if a pet owner does not add a top cover for their tanks. semi-aquatic amphibians need both land and water divided in the tank. tropical frogs would need mist and high humidity in their terrariums. all water for amphibians must be dechlorinated. the chlorine can kill amphibians, and may be in tap water. many amphibians are popular exotic pets and are found in some pet stores.