How dogs see the world: If we go outside with our dogs at dusk or in the dark, light collars help us to see them. But how dogs see the world?
For humans, the world is colorful. For dogs, optical perception is probably in second or even third place. If you know what and how your dog sees, you can make it easier for him to perceive you.
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Table of Contents
How dogs see the world – Get Here The Six Facts
1. Are dogs color-blind?
Scientists used to think that dogs see the world in black and white. Today we know that a dog can see at least specific colors, although not as many different shades as humans.
All eyes have a retina, which is essential for both light sensitivity and color recognition. On the retina, there are so-called rods and cones.
The more rods there are on the retina, the more light it can absorb. The more different cones there are on the retina, the more colorful the world appears.
The human eye is equipped with three different types of cones and can recognize a color spectrum of red, green, and blue in its gradations.
A human being can distinguish up to 200 shades of color in this way. Dogs own only two different types of cones in their eyes, so their color spectrum only includes blue-violet and yellow.
The color red appears to dogs as yellow, the color green they cannot see, and purple seems to them as grey.
2. How is the dog’s eye constructed?
Whether human or dog, all eyes have a retina. On the retina, there are rods and cones. They are essential for color recognition and light sensitivity.
While the rods on the retina are responsible for light sensitivity, the cones on the retina are responsible for color recognition.
3. Dog eyes less colorful.
Dogs only have two different types of cones. Their color spectrum only includes blue, violet, and yellow.
Red looks like yellow to them, green they don’t see at all, and purple appears grey. Overall, they see the world as less colorful than we humans.
4. Dog eyes are better visibility at dusk.
With the help of the so-called Tapetum lucidum, a reflective layer located in the area of the retina, the incident light is getting amplified.
It also provides a typical reflection of the eyes of nocturnal animals when illuminated in the dark.
In combination with a large number of rods, twilight vision becomes more precise and better in comparison to us humans.
5. Dog eyes are faster in the detection of movement
Dogs are slightly short-sighted and are less able to detect objects that are not moving.
However, as soon as an object moves, they can also catch it very well from a distance, as soon as a prey animal flees.
6. Dog eyes have a broad overview.
The field of vision of a dog can be up to 240°, as the eyes are further apart than in humans. It makes it easier to search a large area for prey. However, this means that spatial perception is not as good as in humans.
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Compared with human vision, the dog’s vision in terms of depth of field, color vision, accommodation, and visual acuity significantly reduced. Qualities such as seeing in poor light conditions, the perception of movement, the expansion of the field of vision, and the differentiation of shades of grey are much better getting developed.
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