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Anything that is unrelated to elephants is irrelephant Anonymous - The problem with quotes on the internet is that you can never tell if they're genuine Winston Churchill, 1944 - Never argue with a fool. Onlookers may not be able to tell the difference. Mark Twain
A friend of mine had a cat that didn't need a litter box. You were supposed to leave the lid of the toilet seat up, otherwise the cat wouldn't be able to use the toilet. After the cat had done its business, it climbed up on the cistern to operate the flusher knob.
One fun side is that this was the third generation of toilet trained cats: The cat mother taught its kittens how to do it, with very litte human intervention or training. At least that is what my friend told me. (At first I thought everything was a joke, but I did get a chance to see that the cats were in fact using the toilet as described.)