- amphibiaweb.org amphibian/amph_index.htmlInvestigating the antimicrobial properties of amphibian skin glands is an area of promise for medical and pharmaceutical applications (e.g., Xi et al 2013).
- wildlifeinformer.com examples-of-amphibians/An amphibian’s life cycle is broken down into 2 stages, larval and adult. The larval stage is 100% aquatic and the adult stage may be only semi-aquatic.
- amphibianark.org education/what-are-amphibians/All about amphibian biology, taxonomy, ecology: frogs, toads, caecilians and salamanders. Learn about amphibians and their role in nature.
- newworldencyclopedia.org entry/AmphibianAnurans have well developed voices, whereas the other two orders of amphibians are limited to sounds such as coughs and grunts.
- britannica.com animal/amphibianAmphibian, any of roughly 8,100 vertebrate species known by their ability to exploit both aquatic and terrestrial habitats.
- animalspot.net AmphibiansWhat is an Amphibian? Ectothermic vertebrates belonging to the class Amphibia are collectively known as Amphibians.
- The Chinese giant salamander is the largest amphibian in the world, while Paedophryne amanuensis, a frog from Papua New Guinea is the smallest.
- nationalgeographic.com animals/amphibiansAll can breathe and absorb water through their very thin skin. Amphibians also have special skin glands that produce useful proteins.
- sciencenotes.org amphibians-definition-examples-…Closed Circulatory System: Amphibians have a closed circulatory system with a heart that pumps blood through their body, which is a common feature in vertebrates.
- cosma.org amphibian/Amphibians are vertebrates that is four-limbed and ectothermic of the class Amphibia. All living amphibians belong to the group Lissamphibia.