A well-studied example of a ring species is the salamander Ensatina escholtzii of the Pacific Coast region of the United States. In Southern California, naturalists have found what look like two ...

Ringed salamanders can reach up to just over 9 inches in total length. Most adults vary from 5 1/2 to 7 inches in total length. The distribution of ringed salamanders in the United States is small, ...

Aquatic frogs (except bullfrog and crawfish frog), Woodhouse’s toad and aquatic salamanders of the genera Necturus and Ambystoma (except mole and ringed salamander) have no limit. The daily limit and ...