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2 answers

It is because of the specific pigment in the iris, which has an adaptive value.

2007-12-17 23:33:11 · answer #1 · answered by Ishan26 7 · 0 0

I suspect it matches the color of the environment. Many animals key in on eyes that are watching them and dark eyes might give them away..

2007-12-10 20:14:19 · answer #2 · answered by bravozulu 7 · 0 1

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