It looks like you're using an old browser. To access all of the content on Yr, we recommend that you update your browser. It looks like JavaScript is disabled in your browser. To access all the ...

蛇年新春，小盗龙打算在春节期间给大家科普七种已经灭绝的史前巨蛇，一起探索蛇类的极限和辉煌，今天介绍的是一种从中生代一直生存到中生代的巨蛇——母牛谷蛇！

It looks like you're using an old browser. To access all of the content on Yr, we recommend that you update your browser. It looks like JavaScript is disabled in your browser. To access all the ...