Amphibians (Amphibia)
- cluster of vertebrates amphibian s, four feet (exception: legless amphibians), a body covered with a thin skin without scales (with the exception legless amphibian s). Clammy skin enables amphibians gas exchange. All amphibians a re cold-blooded. In the skin there are numerous mucous glands, and sometimes poisons (eg parotydy in toads), and pigment cells. The most dangerous is the poison of small, colorful drzewołazów from South America. Amphibians are prey. Present on all continents except Antarctica.