When you turn off the lights of your room and go to bed at night, the glow from the moonlight or bedside clock light allows the creation of some shadows from which we may not be able to discern the features of the place, but what about dogs?
Can dogs see in the dark? Or can dogs see you better in total darkness? Or he can’t see you at all.
Many dog owners ask this question, wondering how their dogs’ eyes work. And how they perceive things around them
However, we must be careful when assuming what animals actually see because we do not know what their brain interprets from the information they receive.
Anatomically and functionally the eyes of dogs are very similar to ours and they can see in the dark as we can do. Dogs have a cornea, pupil, lens, retina, and cone cells with the dog’s eye.
The location of the eyes on the front of the head is a sign that the dog is a predator, not a prey. prey has eyes on both sides of its head, such as mice and rodents, but dogs have eyes at the front of the head that provides dogs with limited peripheral vision such as humans and a good deep vision
Dogs’ eyes also function as well as humans. Light enters through the cornea and then the pupil, where it expands and convex to control the amount of internal light, then light passes through the lens and hits the retina, and there the light is processed.
What is the difference between the eyes of dogs and human eyes?
The main difference between a dog and human eyes in night vision abilities is found in the retina.
The retina consists of bacillary cells and conical cells that interpret light information. Bacillus deals with low-light visibility while cones process bright light and see colors.
Dogs have a better view in the dark because the bacilli are dominant on the retina, whereas the human retina is more conical.
In addition to having many bacilli that treat low light, dogs’ retinas contain reflective tissue beneath the retina called the tapetum lucidum, which is said to help them use less light more efficiently.
Scientists speculate that dogs do not see in the dark completely, but they see much better in low light or dim light than we can because of these differences
Can dogs distinguish colors?
Scientists say that since dogs have more bacillus cells and fewer cone cells, they have limited color vision. Human eyes have a three-color vision.
It has three different types of cone cells that absorb different wavelengths of light, allowing most humans to see colors from the red to the violet spectrum.
Dogs, by contrast, are dichromatic and have two types of cone cells. Dogs may see blue and purple colors, but the colors in between (such as green, yellow, and red) may blend with each other and appear in the same color.
Therefore, scientists say that dogs have what is known as “color blindness” as they have limited color vision and maybe like some people with color blindness, and lack mainly the ability to distinguish between some colors such as green and red.
To sum up, dogs see in the darkness better than humans, but they do not have the full vision of colors like humans, and in addition, they rely on their other senses, such as their sense of smell and hearing.