I have been searching for some kind of enclosure I could use to give the torts some outside time (supervised, of course), and then I remembered I had this old dog cage in the shed. I took it out, removed the tray and turned it upside down, and it's perfect for now. They can graze, the openings are small enough that they can't get through, and they are completely safe from dogs and/or predators. We had a nice two hours yesterday with the phone playing "Grazin' in the Grass" softly. I have to look for the pix.