How many eyelids does a rabbit have?

Rabbits have three eyelids for each eye: an upper eyelid, a lower eyelid, and a third eyelid, commonly referred to as the nictitating membrane. This third eyelid plays a crucial role in protecting the eye and keeping it moist. It can move across the eye to provide additional coverage, especially in environments where debris or hazards might pose a risk.

The presence of this third eyelid is significant for several reasons. It helps to shield the eye from irritants and assists with the lubrication of the eye surface, ensuring that the rabbit's vision remains clear and the eyes stay healthy. Understanding the anatomy of a rabbit's eye, including the function of all three eyelids, is particularly important for proper care and handling during shows, as it can indicate the overall health of the animal.

The other options do not accurately reflect the anatomy of a rabbit's eyelids, as rabbits indeed have a unique and functional third eyelid that plays a vital protective role.