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In nature, large eyes are only fast runners
Horses, wolves, canine, feline - they all have a larger size of the eye in relation to the body than other animals. It turns out, the sooner the animal is able to move, the more likely it is to have big eyes, because the large size of the eyeball makes it easier to capture moving objects and to determine their speed.
Interestingly, the evolution of man ignored this trend: having relatively large eyes, we, however, can not boast of outstanding achievements of speed. Even a small lap dog is capable on his short legs, if necessary, develop a speed greater than man.
via factroom.ru
