河马

📖 1. 概览

在分子系统学上是现生鲸类（Cetacea）亲缘关系最近的陆生近亲，也是非洲水滨最令人生畏的半水生巨型草食动物。

🌐 Wikipedia 摘要摘录

The hippopotamus, often shortened to hippo, further qualified as the common hippopotamus, Nile hippopotamus and river hippopotamus, is a large semiaquatic mammal native to sub-Saharan Africa. It is one of only two extant species in the family Hippopotamidae, the other being the pygmy hippopotamus. Its name comes from the Ancient Greek for "river horse" (ἱπποπόταμος).

🦴 2. 身体结构与特征

嘴巴可张开至150度，拥有50cm长的犬齿和约8,100N的咬合力，能瞬间制服鳄鱼或狮子。

🔍 3. 生态与行为

皮肤会分泌红色的“河马汗酸”黏液，同时起到阻挡紫外线和防止细菌感染的作用。

🇰🇷 4. 与韩国的关联

是偶蹄目—鲸河马亚目（Whippomorpha）进化系统学教育的核心生物。