If you dreamed that a black dog died: There may be very important supports, aids or developments, there may be difficulties in communication due to reasons beyond your control. To see that a black dog dies in your dream indicates that you should be very careful about your behavior and actions, have a reputation in the society, not to mess with anyone, and stay away from bad and malicious people. Not killing a black dog in a dream is interpreted as not harming anyone and wishing for the good.