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
The question is, what type of animal?
Compare a humans eye to that of a dog or gorilla, and superficially they look very similar.
Compare them to the eyes of a cat or goat, and you have something very different.
The trick is that different species have evolved to use their eyes in different ways, so they have ended up with eyes that are specialised to suit the jobs that specific species needs. Some will be better tuned for night vision, for sharpness, for maneuverability or field of view,, and these will all come with different physical properties and changes that affect the way they look.
So a dog has fairly human like eyes because they do a similar job, a cat has eyes better suited to night vision with better control over the pupil to allow this, while a hamster wontnrely on their vision so much and will have more basic eyes.
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