Here are two of my girls--there is actually three in there--GraceLynn is in the back. They LOVE this so much and Priscilla has not gotten out of it since I put it down--at least an hour!
Pet Co has them in the Ferrit Section (petco holds piggy adoptions thats where i got mine and dont sell to people as feeders, you have to fill out a sheet to buy one)
Haha! Be careful once that get too big. I bought it for my two piggies and he got stuck! It took like fifteen minutes before he wiggled his way out. I was about to cut it! lol