I am a new member and a new cavy owner. We got Charlie about a month ago. It seems I have alot to learn about him. I plan on getting him a bigger home in the future..right now he lives in a 20 gal aquarium. I also have 2 cats and 2 dogs. The cats dont mind him,,but my lab just stares at him and whines. Charlie likes to tease him. I got him chew toys and I feed him guinea pig diet food,,and he loves carrots. Does anyone have any of those balls they can go in and roam around,,if so..what is your take on them? I am considering getting one so he can get exercise and that my other pets cant harm him. Thanks!!