Actually Kalypso was only 5 weeks old when I got her from my piano teacher. The teacher said she was eating hard food and drinking water, and she was perfectly litter trained, so she figured the kitten was ready to go. And Kalypso was fine, the only thing I had to do was give her some catmilk once a day to keep her fully happy, but other than that she knew how to do everything.

Maybe Kalypso was just a genius kitty.