The mirror image spell description says
A creature is unaffected by this spell if it can't see, if it relies on senses other than sight, such as blindsight, or if it can perceive illusions as false, as with truesight.
Most creature has senses other than sight, but some has (far) better sense that works together with sight.
A Wolf has Keen Hearing and Smell. Does this mean wolf can bypass mirror image effect? The wolf does not rely on hearing or smell, but has 'heightened sense' on that.
Dragons have Blindsight 10 ft, but they can still see. Does this mean they still rely on sight and affected by mirror image even in 10 ft?
A Shambling Mound has Blindsight and blind beyond 60 ft. It seems to me that it does not have normal sight. It does not rely on sight and would not be affected by mirror image.
What does the rule say about this?