njwight:

Odd little farm animal fact – goats have rectangular pupils. When dilated these slits cover 320 – 340 degrees, as opposed to our round little human pupils that only cover 160-210. This means they can see virtually all around them without having to move so they are aware when a wayward rooster may be approaching. Animals with rectangular pupils (actually, many animals with hooves) can also see better at night due to having larger pupils that can be closed more tightly during the day to restrict light. And it is these rectangular pupils my friends, that make the goat and the octopus see eye-to-eye! (That is correct. The octopus also has rectangular pupils.)

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