Ok, Penny's water bottle is so leaky that there is a continous drip coming out of it. We need to buy another one but it seems like all the ones that we have ever used before have leaked. Her water bottle does have a ball bearing in it I always get those kinds. Also, does anyone know what the best guinea pig food is? I got her Kaytee Forti-diet from the pet store this friday but the woman told me to order Oxbow cavy cuisine and gave me their website info. I mean is it worth the extra money to order this stuff online rather than just keeping her on the Forti-diet? She seems to like the pellets that I just got her (yes it's just pellets no fruits or nuts mixed it). She seems really picky though on what she eats. Like she'll eat all her veggies (mostly carrots and spinach right now) and then her timothy hay and then if she gets really hungry she'll eat the pellets.