my cat doesnt use cat language like a cat?? i know cats pretty well so we we first got her i would listen to her when she started wagging her tail and stop petting her but she would rub on me and purr while VICIOUSLY wagging her tail, she also purrs when she is upset sometimes, for example, she will purr while clawing at you to let her down if she doesnt wanna be held !! its really strange, we have had her for 10yrs (since she was a tiny baby) and i dont know why but shes always done it !!