オオサンショウウオ
The Japanese giant salamander can grow to a length of and a weight of . The largest wild specimen on record weighed and was long. It is the third-largest amphibian in the world, only smaller than its close relatives, the South China giant salamander and the Chinese giant salamander. The brown and black mottled skin of "A. japonicus" provides camouflage against the bottoms of streams and rivers. It has very small eyes with no eyelids and poor eye sight. Its mouth extends across the width of its head, and can open to the width of its body.