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How does a dog’s vision compare to human vision?

Just because dogs don’t appreciate the entire spectrum of color that humans do, that doesn’t mean they don’t perceive different colors. They just may not see the “true” color of an object.

For example, the color red appears dark brownish-gray or black to a dog. And yellow, orange, and green all look a bit yellowish to a dog. Our furry friends see blue really well, but purple looks the same as blue to them. When playing a game of fetch, dogs can’t tell the difference between a red ball and a yellow ball. Luckily, they have a great sense of smell so they can usually identify their ball and avoid mix ups when playing a game of fetch in the park.

“In addition to color perception, canines and humans have other visual differences.”

In addition to color perception, canines and humans have other visual differences. In some respects, canine vision is not as acute as human vision. Dogs are more near-sighted than we are. When looking at an object from the same distance, the object may appear crisp to us, but blurred to our dogs. Our canine companions are also less sensitive to changes in brightness. Basically, dogs simply don’t have the ability to perceive color in the rich, vibrant tones that we do.

What are other visual differences between dogs and people?

Canines have some visual advantages over humans. Dogs have eyes that are set more on the sides of the head which allows them a broader range of peripheral vision than we have. The trade-off is a smaller range of visual acuity so dogs don’t have the depth perception that we do.

Dogs have pupils that dilate to the max allowing them to capture as much light as possible. They also have reflective cells under the retina which form the tapetum. The tapetum gives dogs the “shiny eye” appearance and also improves their ability to see in dim light.

Dogs also have more rod cells in the retina than their human friends. Rods are responsible for detecting motion, even small movements at great distances. So, when compared to humans, dogs see better in dim light (dusk and dawn) and can more accurately detect motion.

Why do dogs see what they see?

Nature equips dogs with special visual accommodations that allow them to survive and thrive in the wild. Seeing well in dim light and picking up slight movements in the forest at great distances improve the dog’s hunting ability. These assets also help a dog know when HE is the prey and needs to flee.

Times have changed and most dogs are members of our human families now, so we provide them with nutritious food and protect them from predators. Even so, these visual abilities remain in the canine family.

Why should pet owners be aware of their dog’s visual capabilities?

Knowing how and what your dog can see will help you make good choices for her. For example, you should keep your dog’s color range in mind when shopping for toys. She will enjoy yellow and blue toys more than red ones. And you’ll understand why she gets distracted during a game of fetch as she hones in on a bird flying 50 yards away. You’ll also know that to get his complete attention, you should stand directly in front of him where his range of visual acuity is greatest.

And the next time you are lucky enough to be graced with a rainbow in the sky, rest assured that your dog can enjoy it, too. He won’t see ALL the colors of the rainbow, but he may see a bit of yellow and blue. And that’ll be just fine for him!

SOURCE: VCA

One comment

  • Brayden Willard

    March 7, 2022 at 5:21 am

    Good article. I’m going through some of these issues as well..

Comments are closed.

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