My cat must have been playing in my stacks today too! I took a walk up to my stacking area tonight and I saw a big pile of splits on the ground, I thought it was odd since I only had a small pile earlier in the day, turns out one whole row fell forward. The stacks face south and they've really dried out since I stacked them a month ago. I checked on my stack of pine, I picked up a split and it weighed about 2 ozs, those really get light when dry.