Create an image of a vicious dog with dull black fur and piercing eyes that conv

Create an image of a vicious dog with dull black fur and piercing eyes that convey coldness and malice. The dog must have a threatening posture, with visible teeth and a fierce expression. Your body should be tense and ready to attack., reflecting their aggressive and dangerous nature. The surrounding environment should accentuate your threatening presence, perhaps with deep shadows and a dark setting that amplifies the feeling of fear and unease."