How many eyelids do chameleons have?

Answer 1

Chameleons have three eyelids on each eye. They possess a unique structure where the upper and lower eyelids come together to protect the eye, while a third, transparent eyelid, known as a nictitating membrane, can move independently to keep the eye moist and clear. This adaptation allows them to have a wide range of vision and helps them in their arboreal habitat.