The horse's senses are generally
superior to those of a human. As prey animals, they must be aware of their
surroundings at all times. They have the largest eyes of any land mammal,and
are lateral-eyed, meaning that their eyes are positioned on the sides of their
heads.This means that horses have a range of vision of more than 350°, with
approximately 65° of this being binocular vision and the remaining 285°
monocular vision. Horses have excellent day and night vision, but they have
two-color, or dichromatic vision; their color vision is somewhat like red-green
color blindness in humans, where certain colors, especially red and related
colors, appear as a shade of green.
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