Non-verbal Communication: While not as pronounced as in some other species, pandas use their eye patches for non-verbal communication. Specific facial expressions, including the position and shape of the eye markings, can convey different messages and emotions among pandas.
Thermoregulation: The black fur surrounding the eyes of giant pandas may play a role in thermoregulation. By absorbing heat from the sun, these patches help keep the pandas warm in their relatively cool mountain habitats.
Protection from UV Radiation: The dark fur around the eyes may provide some protection from the sun's ultraviolet (UV) radiation. Prolonged exposure to UV rays can be harmful to the delicate eye tissues, and the eye patches help shield them from excessive sunlight.
Recognition and Social Signaling: The unique eye markings help individual pandas recognize each other. This is particularly important for species that live in groups or have overlapping territories, as it facilitates social interactions and minimizes conflicts.