Just like humans, guinea pigs need exercise and entertainment to keep them happy and healthy. Life can get pretty dull inside a guinea pig hutch, so it’s your responsibility as a guinea pig owner to try and make life exciting and interesting for them.
The normal behaviours that guinea pigs need to be able to express include social interaction with other guinea pigs, walking, running, tunnelling, exploring, playing, stretching horizontally, retreating to a shelter and hiding, foraging, chewing, gnawing, and jumping.