Killer 
To dream of a killer represents the eradication of an important part of your emotional self. You may be at risk of losing who you truly are.
A killer in dreams may also represent the opposite; a healing time in your life is about to begin. You have recently taken the opportunity to speak up for yourself and stand up for what you believe in. This will end a situation in a dramatic manner.
Killing
To dream that you kill someone portends your overwhelming tension which may cause you to blow your top as you are likely to lose temper and self-control. Check your emotions and assess if you are harboring rage or bad feelings towards the person you killed in your dream. Your dream may be an actual projection of enormous anger or hatred towards that person. On the other hand, you might be merely seeing yourself in the person you killed. You may be wishing to end the traits that this person represents within you. Is it dawning on you that you might end up as an equally scornful person?
To dream that you have been killed symbolizes a certain level of inconsistency between your actions and your emotions. Alternatively, your dream may be pointing to sudden major changes happening in your waking life.
Your dream may also represent a part of you or your life that you have ignored has been resulting to a number of annoying incidents. The act of killing may be a dramatization for killing these negative and embarrassing traits and habits.
Killer Whale
A killer whale in a dream represents spiritual guidance. The killer whale is a dangerous animal which in a dream represents a part of your psyche which has great power but which must be followed carefully.
Bullfight
To dream about a bullfight is indicative of the battle between your primitive cravings and soulful yearnings.
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