Dogs
We all know that dogs are color blind, so will their vision be affected by this? Worse? If dogs don't have good eyesight, can they quickly catch prey just by feeling, hearing and touch?
In fact, dogs’ vision is really not very good. Their eye control ability is only one-fifth of humans. For a fixed target, dogs can only see up to 50 meters away. , but for moving targets, the dog’s capture range reaches 1,000 meters. It is said that trained shepherd dogs can see people 1,500 meters away.
In addition to having excellent farsightedness, dogs’ sight lines are also wider than those of humans. A dog’s horizontal line of sight is 100°-125°, and its upper line of sight is 50°-70°. °, the lower line of sight is 30°-60°, the binocular vision can reach 250°-300°, and the human line of sight is only 180°.
In addition, dogs can see much better in the dark than humans. This is due to the fact that dogs have many more cones and rods that are sensitive to low light than humans. Therefore, if your dog suddenly barks in the dark, it is likely that they saw something that you cannot see.
As for the problem that many people are worried about, "Dogs are color blind, so how can they lead a blind man across the road like a guide dog?", they have their own measures to solve it. Although dogs cannot see various expressions clearly, they can judge the signs of traffic lights based on the brightness and position of the lights. More importantly, dogs can also use the sound of traffic lights to help them identify the status of traffic lights. .
</p>
</p>