Cats rely strongly on body language to communicate. * Disgust — The lifting or constant shaking of a paw or paws. The more times the paw is shaken, the stronger the cat's feeling; this can sometimes be a four paw affair with each paw being lifted and shaken in turn. This behavior is possibly related to the identical action displayed after stepping into water. Displeasure at a situation can be shown by moving the ears back and rapidly swishing the tail. [citation needed] * Agitation or Aggression — the swishing or sweeping of the tail in a wide swath, in mid-air or against a person. Tail flicking indicates inner conflict, while wide tail swishing shows external conflict. Further irritation may result in the cat moving or leaving the room and even physical aggression. [citation needed