Tuesday, 11 August 2015

NEWSLINK: Why big cats don't have slit pupils

If you've ever gazed into a house cat's eyes and wondered why they don't look like yours or even like those of big cats like tigers, you were onto something.

The shape of an animal's pupils is linked to its lifestyle, a new study published in the journal Science Advances suggests. Scientists analyzed the pupil shapes and ecological roles of 214 species of land animals, including a variety of cats. Their results show that species with vertical slit-shaped pupils tend to be ambush predators, whereas those with circular pupils tend to be "active foragers," which chase down prey.


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