Why do our eyes look so different to that of a birds or a crabs or even other mammals? Is it due to them being used for different things? Or is it to do with the position of them in our head or something?
In: Biology
Our eyes have more sclera (the white part) visible than most other mammals because we’re almost entirely active during the day, so we don’t need our pupils to get big enough to let in a whole lot of dim light. Other more crepuscular animals like dogs will have larger pupils to allow them to see in low light, while animals with slitted pupils are often nocturnal to allow higher regulation of light. Different types of pupils give different advantages to the animal as well as where the eye is placed and how much the animal relies on sight as opposed to other senses.
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