While dogs are unable to perceive colors sharply as humans, their vision is also better in some aspects. They are able to detect even the smallest movements that humans are unable to perceive.
Dogs are not really colorblind, but being nearsighted inhibits them from focusing on the specific shape of things. Objects more than 20 feet away remain indistinguishable to them.
A dog’s peripheral vision is also narrow; with the extent differing between breeds, as well as the size of the animal’s head. Dogs cannot see objects in detail especially when these are located behind their backs.
Dogs are capable of noticing movement from a distance; however they don’t possess the so-called depth of vision. So when a dog looks at a distant object, he sees only the center while the background is blurry.
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