What Cats and Dogs Can See that Humans Can’t: You Won’t Believe it!

PetMD Editorial
Updated: June 14, 2018
Published: February 25, 2014
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Seeing the World in Ultraviolet (UV) Light



"Nobody ever thought these animals could see in ultraviolet, but in fact, they do," Ron Douglas, the study leader and a biologist at City University London, England, told LiveScience.

What purpose does being able to see UV light serve for animals such as reindeer, rodents, and other mammals? It allows reindeer to see polar bears, for example, which are nearly invisible in regular light because they blend in with the snow.

UV light also allows mammals to see urine trails. This would be helpful for predator animals, such as cats and dogs, to find food in the wild.

Image: INTVGene / Flickr



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