There are many aspects of dog life that humans are still unaware of. A common question is how dogs see the world.
Unlike humans, whose vision is based on a wide range of colors, dogs see the world in a more limited palette. Despite this, they have a great ability to detect rapid movements and excellent night vision.
Some popular beliefs claim that dogs see black and white. However, according to the Villoria Ophthalmology Clinic in Spain, dogs see colors but “with a different spectrum” than humans.
National Geographic explains that while humans have 3 types of cones that allow us to perceive colors, dogs only have 2. That is why they can only distinguish shades of blue and yellow, thus their ability to see colors that move away. of this range, such as red and green, is practically non-existent.
Dogs have night vision 4 or 5 times greater than that of humans because they have a greater number of sensory cells in the retina that allow them to visually perceive light. These are called canes.
That’s why canines have better vision than people at night. However, it should be noted that there are also other factors such as the large size of your retina that help your night vision to be good.
The viewing angle of dogs varies according to the size of their snout. Those with long snouts have a wider field of vision that could reach 270º, while those with short snouts only reach 180º, a figure similar to that of humans.
However, small-nosed dogs have the ability to focus better on objects and make eye contact with humans.
The rods are also responsible for the canines’ excellent ability to distinguish moving objects or people. Because they have more rods in their eyes than humans, they are able to process images at a higher frequency, which is why they prefer moving objects.
However, their ability to distinguish things when they are still is minimal. In these cases is when your sense of smell comes into action and is complemented by your vision.
