This happened to me. Conner was in the playpen, and my sister who comes to tend to Conner in the afternoon while I am working, discovered Conner out of his playpen. I thought it may have been a fluke so I put him in the playpen the next day, and he was out again!
My sister gave me a large cage (that was even bigger than the playpen and it has a top on it).
Now he loves it.
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Conner - my best buddy |