The Cat's Vision
The cat's field of binocular vision is approximately 120 degrees. Depth perception within the binocular vision is very important for judging distances to the prey, facilitating chasing, and catching it. Cats have additional lateral vision of approximately 80 degrees on each side, resulting in a total range of vision of about 280 degrees. As a predator, the cat needs a wide field of vision to locate prey.
In comparison, humans have a total range of vision average only 100 degrees.