Most grazing or herbivorous animals have almost square or rectangular slit pupils, and are also normally the animals that are preyed upon. They mostly have laterally placed eyes (on the sides of their head), which gives them panoramic vision. These rectangular pupils, along with the lateral placement of their eyes, gives these animals about a 320- to 340-degree field of vision, as compared to cats, who can only see about 200 degrees around, and humans, who can only see in a 180-degree field.