A few months ago my cat started acting strangely, licking her back & sides and twitching as if her skin itched. The Vet said that she needed more attention, so I gave her more and the behavior stopped. Recently she has been acting strange again by meowing, holding her front paw up as if it is broken and limping around on 3 legs. When she thinks I'm not looking, I see her playing and running around on all 4 legs. I give her plenty of attention and she is not neglected, so why this strange behavior? I feel like she is playing mind games with me.