I found out a neat thing today that I thought I'd share with all of you...I've had my piggies for a few days now and they completely ignored their water bottle...I had a water dish for them and they drunk out of that, but I wanted to teach them how to use the water bottle. So yesterday while I was holding my piggy I held the water bottle in front of her and nudged the ball to make a few drips fall on her face, she licked the water off and after a few more times she started chewing on the end of the water bottle. Today she's drinking out of it just fine.