Why Cats Have Vertical Pupils

Why Cats Have Vertical PupilsVertical-slit pupils are most common among nocturnal predators that ambush their prey, according to the new research, published today (Aug. 7) in the journal Science Advances. The observation that predators tend to have vertical pupils and prey horizontal ones dates back to the 1940s, but no one had ever quantified that difference, said Martin Banks, a vision researcher at the University of California, Berkeley.

August 7, 2015 9:03 pm

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