Animals With Rectangular Pupils. The pupils of goats’ eyes are horizontal slits because it allows them to have a larger field of vision on the horizontal plane. Goats, sheep, horses, domestic cats, and numerous other animals have pupils which vary from fully circular in faint light to narrow slits or rectangles in bright light.
Goats aren't particularly frightening you may suggest, but those freaky square eyes beg to differ. Her brother and host charlie engelman didn’t know either, so they did some research. Those horizontal rectangular pupils turn out to be a super useful shape that helps goats see more, which can help keep them safe.
But they don't have vertical slits due.
Eyes have rectangular pupils which allow them to watch over their broad, flat grazing area for predators. But they don't have vertical slits due. Because, for a grazing animal like a goat chances from attack from predatory animals are higher. Horizontal pupils are one of the many things that make goats unique, and in our opinion, a reason to love and protect them all the more!