In the video, a group of guinea pigs are gathered in a pen with hay on the ground. A person is holding a piece of apple on a stick, and the guinea pigs are eagerly eating the apple. The guinea pigs are of different colors, including black, white, and brown. The person is holding the apple steady as the guinea pigs eat it. The video captures the guinea pigs' eagerness to eat the apple and the person's interaction with them.