When I take my dog Luna out for a walk, or a nice nature hike, I would like to think she can see the same things that I do. The green grass, the colored flowers, the blue sky. But the truth is that she cannot.

A dog's eyes don't process colors the same way that a human's do. Our retina uses "cones," a specific type of photoreceptor, to differentiate color, according to the American Academy of Ophthalmology. Human eyes have three types of cones: red-sensing, green-sensing and blue-sensing.  

Dogs, on the other hand, only have two types of cones in their eyes, allowing them to detect blue and yellow. Most of their worldview is grayish-brown, according to the American Kennel Club. A red rubber ball may be brown through a dog's eyes. Your pup's favorite green dinosaur plush could appear yellowish to them.

Beyond just the color of things, dogs and humans also see the world differently. Dogs are more near-sighted than humans. If you and your dog are looking at a tree from the same distance, it may appear blurrier to them. Dogs also have better peripheral vision, but their depth perception has a smaller range.

So, while you and your pup may see the same things, you are not experiencing the world the same way.

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