Hello guys, I’m at a loss for words, and just need to post this somewhere to try and make sense of what happened. I have (or, had I guess) six rats in a double critter nation. Three up top, and three on the bottom. The three up top were all five week old females, so very small rats. I had always read though the bar spacing was perfect for even babies with the critter nation. Well, this morning I found one of my little girls hanging from the middle panel (ceiling of the bottom cage and floor of the top cage). She had burrowed under the fleece and tray I had and her head was stuck between the wire underneath. The crazy part to me was, her body was in the bottom cage and her head in the top. I have absolutely no idea how it happened. We had to literally get pliers to get her out. I know the rats in the bottom had nothing to do with it. The main reason I’m posting this is I’m just at a loss and don’t know what to do. Has anyone had this happen before? Where did I go wrong? What could I do to prevent this in the future? It’s heartbreaking because she was fine earlier this morning and gone the next. TIA, anything or advice helps.