Has anyone used a childs playpen for thier furbabies? I am trying to find one that would allow enough room for my girls to play safely in. Any suggestions on what to look for and where to find one?! I don't care for the cages/kennels/play yards that are out there. My older girl can jump and I don't want her to injure herself. They can also get "hung up" in those types (past expereince

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