Short or sparse eyebrows.
The appearance of men with rat eyes is basically that their eyebrows are not long or have very few eyebrows, or even have eyebrows that are not even close to the eye and the color of the eyebrows is sallow and dry, and the eyes are small and do not focus light.
Men with rat eyes are very opportunistic and greedy. They are shrewd in everything they do and like to care about everything.
If a man has splayed eyebrows and his eyes are small, dull, and like a mouse, this is a sinister eyebrow.