Dear Ann, just wanted to offer some advice for Ferret X. We had an older Super Pets cage for a while that two of our kids found easy to escape from. What we did was buy a couple of those key clips to put on the doors. I'm not sure how to describe them. They sort of look like question marks, and you slide the little tab down to open the loop. People use them to clip keyrings to their belts, sometimes. Does that make sense? We put them on the doors of the cage and viola! Not even our little Houdini's could get those things open. Just a suggestion. Hope it helps. Matt and the fuzzy crew [Posted in FML issue 3583]