For a number of years we’ve kept the cats bowls in the bathroom. Once I moved my foot and it made the cat jump like one of those spring plungers. He jumped about a foot off of the ground and it was absolutely hysterical. It’s probably a little mean but ever since then I can’t resist moving my foot if the cat is in the bathroom at the same time as me, just to see if it will happen again. None have jumped that high, sometimes I’ll just get an annoyed look, or at best a little hop. Is there anything you do that makes your cat jumpy?