If you've purchased a ferret ball, the type that has two round removable "doors" on it...your fuzzy butts CAN have fun with it. They absolutely should NOT be put in it for "exercise", but what I do for my crew is remove one of the "doors", stuff a small soft blanket inside along with a few toys and a couple of treats, and give it to them only once in a while! They have a blast getting in..rooting around in the blanket for the toys, and the others tug the blanket making the ball roll... My big boy Finnegan (aka BAMBAM) who is only 5 1/2 months old and 4.5 pounds is SUCH ababy and ends up rolling his buddies around in the ball just trying to get IN! Makes for giggles for us and fun for them! Just as any other toy, they'll get bored with it if it sits there all the time, so we only bring it out once a week or so. Hugs DookDancer and the Ferret Collective Barnum, Bailey, Kami, Clio, Finnegan and Sasha "Resistance IS Futile* [Posted in FML issue 4523]