Pebbles (6.8 lbs) gets out of her xpen (24 in.) & greets me at the door (After a day confined or so I thought!). She's into the eat sheet-rock thing at 8 mths. old. I put her in her xpen & lace the surrounding top with twine. It's been 2 days & she's not been able to get out. I watched her try to get out & she climbs over the top & pushes her self over. I guess I'll wait for her to get over her need for sheetrock before she is on her own again !!