There are even some species, especially tree-dwellers, that have a tail that is kind of prehensile. Some lungless salamanders sever their tail, like a lizard, as a diversion when threatened. This process is called autonomy. Don't worry, though, it regenerates after a while. The majority of s pecies have their adults fully grown at ten to twenty centimeters or four to eight inches.
Salamanders continue growing even after they reach sexual maturity.
That is the reason that they shed the superficial horny layer of skin, called slough or exuvia . The skin is shed either in pieces or in one piece. They then find it a tasty meal and devour it. The secretions of the mucous glands and mucous part of mixed glands are homogenous and frothy, neutral or alkaline, and sticky. The secretions main purpose is to keep the skin from drying out.