Posts Tagged ‘internationa friendship day’

Interesting facts: rectangular pupils part 2.

December 5th, 2012

The user hhah92 succesfully answered our previous question about rectangular pupils. Congratulations! 🙂
hhah92

Yes, octopuses, as well as their cousins squisd and cuttlefish (collectively known as Cephalopods) have rectangular pupils.
The reason of rectangular pupils is the process called convergent evolution… (more…)

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Interesting facts: rectangular pupils

December 4th, 2012

Unlike most of animals, goats have rectangular pupils.
We are accustomed to see pupils in eyes as round objects, just as our pupils. It allows them to see more around themselves (320-340 degrees of vision, while humans have only 160-200 degrees).
Which also means, that they can see better at night. 🙂

Goat eye (more…)

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