美国青蛙和牛蛙原产地均为美国,同为水陆两栖食用蛙。其外部形态很相似,初见者很难认清哪种是牛蛙,哪种是美国青蛙。也常有人来信或登门询问及两种蛙如何区别,现将它们的主要特征简述如下,供养殖户参考: 1.肤色 美国青蛙(简称美蛙)一般呈黄褐色,其肤色可随环境而变化,具有深浅不一的圆形或椭圆形的斑纹,腹 American frogs and bullfrogs are both native to the United States and are amphibious edible frogs. Its external form is very similar, first seen it is hard to recognize what is the bullfrog, which is the American frog. Often people letter or on-site inquiry and two frogs how to distinguish, now their main features are summarized as follows, for farmers reference: 1. Skin US frogs (generally referred to as the frog) is generally brown, its skin color with the environment Change, with varying degrees of round or oval markings, abdomen