Like other domesticated animals, your guinea pig needs exercise to help keep him strong, and to help keep his weight under control. Unfortunately, your guinea pig may not be getting the exercise that he needs in order to remain in good health.
The first problem is typically that the guinea pig does not have ample room in his pen. You could literally fill his pen with hundreds of dollars of toys, but he still won’t get proper exercise. What he needs is space. He should have plenty of space to run around.
A popular activity among guinea pigs is running as fast as they can around the interior walls of the pen. If there are too many toys or other items in the way, he is prevented from doing this.
