In the video, a person is holding a bunch of green grass in their hand. The grass is long and thin, and the person is holding it up in front of a guinea pig. The guinea pig is black and white and is standing on a bed of wood shavings. The person moves the grass around, and the guinea pig sniffs and nibbles at it. The person then drops the grass, and the guinea pig quickly eats it. The video is shot in a close-up view, and the focus is on the interaction between the person and the guinea pig.