Page 57 - The World of Animals
P. 57

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                 D Do  you  know  that  cats  have
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              p perfect eyesight at night?
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                 Yes, even in a dimly lit place these furry
              creatures can see. Allah has created their eyes differently from
              other eyes. In the dark, their eyes' pupils become larger and
              rounder to receive as much light as possible. This gives them
              keen eyesight.
                 This aside, a cat's eye has an additional layer behind the
              retina. Passing through the retina, light reaches this layer and is
              then reflected back to the retina. Light passes through the retina
              twice since this layer reflects the light back. Therefore, unlike
              human beings, cats can see very well in dimly lit or dark places.           55
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                 H Have you ever thought why cats' eyes sparkle at night?
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                 This is related to the additional layer in cats' eyes we have just
              mentioned. As you know, this layer reflects the light like a mirror.
              It is this reflected light that makes their eyes look sparkling.
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                 D Do you know the features of a cat's paws?
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                 In moments of danger, these tiny paws turn into predatory
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