Dream about killing cats is a hint for your ability to control your anger. It is time to leave behind past feelings and characteristics that are hindering your growth. You are trying to contain and suppress the qualities of the kidnapped person. This dream is an evidence for someone in your life whose charm may ultimately prove harmful. You may be unsatisfied with your present relationship.
Killing cats dream is a message for your supportive or nurturing nature and is associated with feminine qualities. You may lack understanding in a situation or find that a current problem is overwhelming. You can no longer contain yourself, either emotionally or mentally. Your dream denotes your gravitation for oddness and peculiarity. You need to rid yourself of the negativity and things that are weighing you down.
If you dreamt about killing cats:
You are at a critical turning point in your career, and now someone is throwing you yet another curve ball. Your response is to collect more information. Instead, you need to cultivate wisdom in order to process the information you already have.