Why Do Sheep Have Rectangular Pupils?

sheep-pupils

Sheep are not the only animals with rectangular pupils, Goats, cattle, deer, llamas, and many other grazing animals have similar shaped pupils. They may look odd but they have a very important function.

These animals are generally considered prey animals and they have an evolutionary survival need to be alert for signs of danger at all times. These large rectangular pupils give the animals panoramic vision, allowing them to survey the horizon for potential threats.

sheep-pupil

The shape of an animal’s pupil is linked to their ecological niche.

As many of these animals live in open fields, it also helps the eye to gather more light from the ground and less from the dazzling sky. Conversely, predatory animals have slit-shaped pupils to help focus a target and judge how far away prey is, helping them to stalk and pounce.

Related Posts
Spiders have a bad reputation, but jumping spiders don't deserve all the scorn that's heaped
Particularly in the warmer months, everyone wants to get out and enjoy the beautiful weather.
Wombats are marsupials found only in Australia, but the short, stubby-legged animals are rarely held
We usually think of moths as these drab brown or gray winged creatures that batter
If you've been under the impression that cats and dogs are living in this world
When it comes to human babies, we go to great lengths to safeguard our homes,

Leave a Reply

Your email address will not be published. Required fields are marked *

Animal Encyclopedia