Cool picture Debo45221!. I know camels and aardvarks share this optical development. Sharks have full nictitating membranes also don't they?. I know the Great White does, and it's eyes roll white when it comes in to attack.. Something I never want to see for sure.. 🤣🤣👍
I did not know about cats having this protective third eyelid either. One of my Teacher's at school taught us that a day spent without knowledge gained is a day wasted, so on that basis at least we haven't wasted our day @Debo45221!.. 🤣👍
