视频展示了一只牦牛的特写镜头。牦牛的毛发主要是黑色的，头顶有一撮白色的毛发。它的耳朵竖立，角弯曲向上。牦牛的嘴巴微微张开，舌头伸出舔了一下鼻子，然后闭上了嘴巴。背景是一片模糊的草地和树木，阳光明媚，环境显得非常自然和宁静。
The video shows a close-up of a yak in a grassy field. The yak has thick, dark fur with a distinctive white patch on its forehead. It is facing to the right and appears to be licking its nose with its tongue. The background is blurred, but it suggests a natural outdoor setting with greenery. The yak's horns are visible, curving slightly outward. The overall scene conveys a calm and serene atmosphere.
A black yak with a white stripe on its forehead is standing in a grassy field. The yak's tongue is initially extended out of its mouth. The yak begins to retract its tongue back into its mouth. The tongue continues to move back until it is fully retracted. The yak's mouth is now closed, and it remains still.