In the video, a hippopotamus is seen standing in a zoo enclosure. The animal is mostly brown with a blue-colored face. The hippopotamus opens its mouth wide, revealing its large teeth and pink tongue. The animal then closes its mouth and opens it again, displaying its massive jaw and teeth. The hippopotamus appears to be healthy and well-cared for, and the enclosure seems to be clean and well-maintained. The video provides a close-up view of the hippopotamus's facial features, allowing viewers to appreciate the size and strength of the animal's jaw and teeth.