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Maroc Maroc - WN.COM - Environment - 14/Jan 22:26

Deer markings actually glow

Animals see the world around them in ways that we humans can only imagine. Arctic reindeer’s eyes change color with the season to help them find food, while giant squid have eyes the size of dinner plates. Many species take advantage of seeing ultraviolet (UV) light that’s invisible to humans—including deer. The woodland mammals appear to be using UV as a way of communicating. Their scrapes—markings they make in the dirt or on wood and fill with secretions—glow under UV light that they can see and we can’t. The same goes for their...

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