They are mostly secretive in nature and are only active when they are not readily observed , they are much less known to most of us than other animals like birds and mammals , and are sometimes even misunderstood . they are a mysterious group of animals called amphibians , or more commonly known as frogs and salamanders 它们生性羞怯，行动诡秘，通常在难以观察的时份出没，因此远远不及雀鸟或哺乳类等动物为人熟悉，有时更会令人对物们产生误解。这群神秘的动物名为两栖类动物，亦常称为蛙类或蝾螈。
The complete nucleotide sequence of the mitochondrial genome of f . limnocharis was detailedly compared with those of 5 other amphibians . the nucleotide sequences of 22 trna encoded by 6 amphibians mitochondrial genomes were combined and aligned to the homologous sequences of the 11 veterbrate taxa . using teleosts as outgroup , the phylogenetic analyses results show that mp , nj and ml trees all strongly support the monophyly of living amphibians with respect to other living tetrapods and favor a sister group relationship for caecilians and salamanders 我们在测定了泽蛙线粒体全基因组序列的基础上，与已知其它的5种两栖类进行详细的比较分析，同时选择了11种高等脊椎动物的线粒体全基因序列，以硬骨鱼类做外群，用22个trna基因合并数据进行系统发生重建分析，结果表明mp 、 nj和ml树都强力地支持现生两栖类动物为单系群并且蝾螈类和蚓螈类为姐妹群关系(自引导值分别为92 、 99 、 100 ) 。
Pangtouyu pounds over the head , the rich and glial brain full of fat meat , it was hot and sour flavor of wild salamanders , fish shooting chopped salamanders , delicious , tart , crunchy flu only the beginning of the entrance , this time should not stop chopsticks , or salamanders spicy but not to the staying power of 两斤以上的胖头鱼鱼头，大且富含胶质，脑满肉肥，用的是酸辣的野山椒调味，鱼肉混着剁碎的山椒，鲜香、酸甜，入口之初只感微辣，这时候千万不要停筷，否则山椒辣的后劲可是了不得的。
