The video shows two large tortoises in a natural setting. One of the tortoises is lying on the ground while the other is standing next to it. The tortoise on the ground is using its mouth to bite and eat the other tortoise's neck. The standing tortoise appears to be passive and not resisting the biting. The environment around them is lush with greenery, and the ground is covered in dry leaves. The tortoises are dark in color, and their shells are large and rounded. The video does not contain any other animals or humans.