视频展示了一只河马在水中张大嘴巴的场景。河马的身体大部分浸没在水中，只有头部露出水面。它突然张开巨大的嘴巴，露出粉红色的口腔和锋利的牙齿，似乎在打哈欠或发出声音。背景是一片平静的水面和岸边的草地，环境显得非常自然和宁静。
The video shows a hippopotamus in a body of water, partially submerged. The hippo opens its mouth wide, revealing its large teeth and pinkish interior. It appears to be yawning or possibly vocalizing. The background consists of a grassy area with some patches of dirt, suggesting a natural habitat near a riverbank or pond. The water is calm, reflecting the surrounding environment.
A hippopotamus is seen partially submerged in water, with its head and upper body visible above the surface. The hippo begins to open its mouth gradually, revealing its teeth and tongue. As the mouth opens wider, water starts to drip from its mouth. The hippo continues to lift its head and open its mouth fully, showing its large teeth and pink interior. The background consists of a grassy area with a sandy shore, and the water reflects the hippo's actions.