In the video, there are several guinea pigs of different colors and sizes. They are seen walking around a pen that is covered with wood shavings. The guinea pigs are moving around, sniffing the ground, and exploring their surroundings. The pen appears to be well-maintained, with a clean and comfortable environment for the guinea pigs. The guinea pigs seem to be healthy and active, and they are interacting with each other in a friendly manner. The video captures the natural behavior of these animals in a controlled environment.