青蛙青蛙,两栖动物,栖息于水边。成体基本无尾,卵一般产于水中,孵化成蝌蚪,用鳃呼吸,经过变态,成体主要用肺呼吸,但多数皮肤也有部分呼吸功能。头两侧有两个声 Frog frogs, amphibians, perched on the water’s edge. The adults are basically non-tails. The eggs are generally produced in water and hatch into tadpoles. They breathe through the gills and undergo metamorphosis. The adult mainly breathes in the lungs, but most of the skin also has some respiratory function. There are two sound on both sides of the head