Here’s looking at you. Dogs have three eyelids, an upper lid, a lower lid and the third lid, called a nictitating membrane or "haw," which helps keep the eye moist and protected.
Here’s looking at you. Dogs have three eyelids, an upper lid, a lower lid and the third lid, called a nictitating membrane or "haw," which helps keep the eye moist and protected.
Wow, interesting!