Killing a Dog
Killing a dog in a dream is, in fact, interpreted as auspicious.
What it means to kill a dog in a dream is that the dreamer will rid himself of his enemies after a short while. At the same time, it indicates that the person will recognize the ill-hearted people around him and remove them from his life.
At times, it also means that a person who intended to do evil to the dreamer will abandon that evil at the last moment.
As for killing a black dog in a dream, it signifies that the dreamer will rid himself of a very wicked enemy before much time has passed and drive him away.
Positive Meaning
It provides early awareness; the person sees risks before they grow and can choose a more solid path.
Shadow Meaning
Neglect, haste, untrustworthy people or uncontrolled behavior can increase the difficulty.
Advice
In the interpretation, the themes of work and responsibility, journey and change, the emotional tone in the dream, and how the symbol concludes in the dream should be evaluated together.