These ungulates have a third eyelid to protect their eyes from blowing sand
How do animals protect their eyes? - BioMEDIA Associates  Fish have it easy...at least when it comes to keeping their eyes moist and free of particles. ... The result  adaptations such as the lacrimal system, eyelids, the nictitating ... These tears serve to wet and clean the cornea. ... and other reptiles as an adaptation to the constantly blowing dust and sand of their desert environment.
Jeop Other Stuff III Flashcards | Quizlet  ... Jeop Other Stuff III. Learn vocabulary, terms, and more with flashcards, games, and other study tools. ... Camels. In the 1850s, Army expeditions near Flagstaff included one led by E. F. Beale using this unique form of animal transport.