I was away for a few hours and left the cabinit door open for ventilation. I came home, and I looked in the wet/ dry sump to see cat hair all trapped in the foam block and cat hair on the return pump intake strainer. I went and found my cat, soaking wet, (just beginning to dry). Now I have to somehow wash the cat. This was in the freshwater chicid tank in my upsairs. The cat must have been sleeping on the lid with the bulhead (catslike the warmth and vibation) and must have somehow fell in !!