News » Science and Technology
Dogs see the world around them differently than humans. Dogs have dichromatic vision, meaning they only see blue and yellow, and they also have blurry vision and cannot see objects in three dimensions. British veterinarian Ryan Rochford told the Daily Mail.
British veterinarian Ryan Rochford decided to show how pets see the world. To do this, she created a series of photographs of popular tourist destinations in the UK. On some you can see how a person perceives them, and on others – how dogs do it.
“Dogs have dichromatic vision, which means they only see blue and yellow. At the same time, people perceive the world in blue, yellow and red. Dogs see dark brown instead of red. They perceive green as beige and purple as blue,” says Rochford.
In the human eye, there are photoreceptors that respond to light, and there are photoreceptors that are responsible for color differences and they are called cones. Dogs have two cones, while humans have three. Therefore, the perception of colors in dogs is different.
But on the other hand, the photoreceptors in dogs, which are responsible for the reaction to movement or the absence of light, for example, at night, are better developed. Therefore, dogs navigate much better at night and react more effectively to moving objects than humans.
“It is also important to know that dogs have blurred vision from birth, that is, they see the world around them 8 times worse than we do. They are also less sensitive to light, meaning they see changes in brightness twice as bad as we do,” says Rochford.
vision, that is, they see better than a person what is happening not in the spotlight. But among the shortcomings of vision in dogs, Rochmond calls that pets do not see objects in three dimensions, which reduces the perception of the depth and volume of the visible object, as well as the distance to it.
But dogs do not particularly suffer from this that their eyesight is worse than that of humans. They rely more on their sense of smell in their daily lives. According to scientists, in dogs it is 10-100 thousand times stronger than in humans. So when a dog loses his eyesight as he ages, he can still live normally.
It turns out that dogs don't need perfect eyesight to recognize their owners. As Focus already wrote, a study by Hungarian scientists showed that dogs can only recognize their owner by voice.
Follow us on Telegram