In '84 I had a 90T with 8 RBPs in it. When my roommate brought a cat home she said she was worried about the cat getting up on the tank. I made a sliding SS top for the tank and, before installing it, put the cat on it to test its strength. No problem. The cat barely caused the steel to flex. So, on the tank it went. About 10 months later, I came home from the ship (retired Navy) and entered the house to a gurgling sound. The filter on the RBP tank was struggling. The cat had jumped up onto the tank, from the staircase, and the whole shebang went into the tank.
The gurgling of the filter was caused by the cats fur. There was a very gory scene everywhere you looked. I hooked a diatom filter to the tank and started it up as I continued to net larger pieces from the tank. As the water started clearing, these white objects started standing out. A little more clearing and you could make out the cat's skull plus 7 smaller skulls.
Yep, the cat was pregnant and neither one of us thought there would be an increased risk of the cat getting on top of the tank. At least I was able to get everything cleaned up before she got home. I was tempted to let her think the cat ran away but, owned up to it in the end. The RBPs were gone by the end of the week.