If you have dreamed of killing a dog by mistake in your dream: You may want to spend time with your friends during the day, your small efforts may bring great benefits. Killing a dog by mistake in a dream refers to a troubled, troubled life and disgrace, growing problems day by day and suffering because of a person you trust. Killing a dog by mistake in a dream and not having any remorse is interpreted as getting rid of a person who harbors hostility towards you.