Day 39
Post#39 Feb 19, 2020 Wed 20:12 PM
Ever noticed, cat has vertical pupil, but goat and horses have horizontal one. Tigers, like humans have round pupil.
There are many research conducted around which supports the fact, that shape of eyeball evolved from the ecological niche (that is, hunting/searching mode)
"If you have a vertical slit, you're very likely to be an ambush predator." Those are the kind of animal who lies in wait and then leaps out to kill. These predators need to accurately judge the distance to their prey, and the vertical slit has optical features that make it ideal for that.
But that rule only holds if the animal is short, so its eyes aren't too high off the ground. So cats has vertical slits, but tigers do not have.
In general, round pupils seem to be common in taller hunters that actively chase down their prey.
Meanwhile, if you're the kind of animal that gets hunted, you're very likely to have a horizontal pupil and to have your eyes on the side of your head. That makes sense, he says, because it gives prey animals a panoramic view, so they can best scan all directions for danger.