My cat is use to jumping up on top of my 180 because I always have lids on unless im cleaning....Wellone day I had nothing on the top of the tank while I was cleaning and he jumped up and into my half full tank! I was so freaking funny because it was still deep enough where he couldnt quite touch and shallow enough he couldnt jump out. I laughed so hard I cried. He got even when I finally stopped laughing hysterically and removed him. I git the absolute crap scratched out of me