moths do not shiver because they are frightened, but because they have muscles that need to be warmed up before flight. the shivering helps to regulate their temperature and ensures their wing Why do monarch butterflies shiver? They do this to increase their body temperature by warming their muscles so they can take flight. Photo Courtesy of Community Monarch Butterfly Garden Facebook Caring For an Injured Butterfly Vibration Plate Workout: How To Use Vibration Plates In Your Gym Routine What causes shaking in monarch butterflies? Why do monarch butterflies shiver? They do this to increase their body temperature by warming their muscles so they can take flight. Photo Courtesy of Community Monarch Butterfly Garden Facebook