I Have posted this illusion earlier before, but I am posting it again because of some personal reasons :)
This illusions is simple – all you have to do is see the cat rotate in both directions. At first you may think it’s impossible, but after some practice you’ll soon be able to switch the direction with each round. I’m also interested to hear your comments about the original direction you saw the cat spin at? When I first saw this, it appeared to move clockwise. Now each time I see it – it’s just the opposite (concentrate on it’s tale to switch).