Since nobody really knows why cats do stuff like this, I’m putting it in IMHO rather than GQ, but mods, feel free to move it if you see fit.
I’ve had cats all my life, so I’m pretty familiar with their cool/annoying, hilarious/infuriating little behaviors, but this one has me stymied. The cat I have now is a 2-year-old domestic shorthair that we’ve raised from a pup. (Sorry, no photo; I have no camera ATM). Her personality is fairly independent and standoffish. She doesn’t like being picked up, wants no cuddling and only limited petting, but is generally friendly and an all-around good egg.
When she was about 18 months old, she decided it was her job to sit on a ledge we use as our setting-stuff place (where you set the stuff you have in your hands when you come in the door) and pitch things into the water dish. That was mildly amusing, but we moved the water dish and put an end to it after a while. Just the last 6 months or so, she has begun finding items made of cloth (socks, the dishcloth, a hand towel, stuffed dog toys) and dragging them from distant points in the house so she can put them into the water dish. This is usually just funny, but she sometimes does not get them all the way into the dish and they siphon all the water out into a pool on the floor.
On the bright side, I now know where the low spot in the kitchen is. However, she recently draped a sock over the edge of the water dish in my office and created a small lake in the middle of our new bamboo floor. I’m just happy I had to make a midnight visit to the facilities, so I was able to prevent permanent damage.
She almost always does this in the middle of the night, but since our schedule is erratic that could be at 3 a.m. or 3 p.m. I don’t think it is related to boredom; she has cat toys (aka crumpled balls of various materials), and there are innumerable spiders to chase in the basement, birds to watch at every window, and objects to knock off my desk.
So, any ideas what this behavior relates to? Any suggestions for curbing it?