Which animal has a panoramic field of view?
Vision is the dominant sense in cattle and they obtain almost 50% of their information visually.
Cattle are a prey animal and to assist predator detection, their eyes are located on the sides of their head rather than the front. This gives them a wide field of view of 330° but limits binocular vision (and therefore stereopsis) to 30° to 50° compared to 140° in humans. This means they have a blind spot directly behind them. Cattle have good visual acuity (1/20) but compared to humans, the visual accommodation of cattle is poor.
Cattle have two kinds of color receptors in the cone cells of their retinas. This means that cattle are dichromatic, as are most other non-primate land mammals. There are two to three rods per cone in the fovea centralis but five to six near the optic papilla. Cattle can distinguish long wavelength colors (yellow, orange and red) much better than the shorter wavelengths (blue, grey and green). Calves are able to discriminate between long (red) and short (blue) or medium (green) wavelengths, but have limited ability to discriminate between the short and medium. They also approach handlers more quickly under red light. Whilst having good color sensitivity, it is not as good as humans or sheep.