Dogs are not really color blind

If dogs are "color blind", this statement is not very accurate, but compared with humans, dogs can only see part of the visible light spectrum, due to the retinal The difference is that they can only feel blue light, red and yellow light, but cannot identify green light. Therefore, dogs are indeed "color blind".
Scientists have concluded through continuous experiments: In the eyes of dogs, the world is black, white and dark gray, mixed with red and yellow light of medium and long wavelengths and blue light of short wavelengths. The world is just like the picture on a black and white TV. , only the brightness of black and white is different, but the change of color cannot be distinguished.

How guide dogs distinguish traffic lights

Guide dogs distinguish traffic lights not by distinguishing red and green light, but by relying on the brightness of the two lights. Although, red light and green All light is gray in their eyes, but different grays can be distinguished. Dogs have a strong ability to distinguish subtle changes in gray shades. Relying on this ability, they can distinguish the changes in light and dark of objects. Produce a three-dimensional visual image.

The reason why guide dogs follow their owners

The route needs to be trained and cannot be walked in one go. When a blind dog is brought back, it will take some time to get used to it, such as guiding the route and getting familiar with the environment. Not all guide dogs that are brought back can adapt to the environment and truly stay and serve. The probability of success is not as high as everyone thinks.

Guide Dog Breeds

1. Labrador Retriever: Labrador Retriever is a medium to large dog with a loyal, generous, honest, gentle, sunny, cheerful and lively personality. , has a very high IQ and is very friendly to people. It is a dog breed that is very suitable to be selected as a guide dog or a subway police dog, a search and rescue dog and other working dogs that often go to public places. It is similar to the husky (Siberian sled dog) and golden retriever. Tied for the top three non-aggressive dogs, its IQ ranks seventh among dogs in the world.
2. Golden Retriever: The Golden Retriever is one of the most common domestic dogs. It is unique in its lovable character. It is characterized by stability, reasonable coordination of all parts of the body, and legs that are neither too long nor too long. Clumsy, friendly expression, enthusiastic, alert, confident and not afraid of strangers. It was originally a retrieval hound. Nowadays, it is mostly used as a guide dog and a pet dog. It is very friendly to children or babies. It ranks fourth in the world in terms of dog breed IQ.
3. German Shepherd: German Shepherd is also commonly known as German Wolfdog. This breed is said to originate from Germany. The only thing that can be confirmed is that in 1880, this dog has been fixed in various parts of Germany. And used as a shepherd dog. Agile and suitable for action-oriented work environment, often deployed on various tasks. Because of their tall size, powerful appearance and strong working ability, they are used as military dogs, police dogs, search and rescue dogs, and guide dogs all over the world.Blind dogs, shepherd dogs, ornamental dogs and domestic pet dogs are active in their identities.

Things not to do when encountering guide dogs

1. Don’t tease them. Guide dogs are for the blind friends to explore the way. If we tease them during their working hours, we may It will cause the guide dog's attention to be distracted and put the blind friend's life in danger. After all, there are a lot of potholes now.
2. Don’t test it, don’t test guide dogs. Guide dogs have also become popular in China in recent years. Many friends find it quite new and want to test whether it really has the function of guiding the blind. In fact, This kind of thinking is very dangerous. The test only lasts for a moment. Life is precious, so please do not test it casually.
3. Don’t throw food. When guide dogs are working, we must not throw food on the ground. Even if we are in public places, we should not throw garbage or leftover food at will. When guide dogs pass by us, Don't throw it away when the time comes, so that your blind friends can have a safe pathfinder.
4. Don’t watch it around. Many friends are very curious and want to get close to the guide dog when they see it. In fact, this can easily cause the guide dog to become nervous, which can cause a series of problems and may lead to poor guidance. , or may be frightened, which will be a serious blow to blind friends.
5. Don’t refuse it. There are many occasions now where guide dogs are not allowed. In fact, guide dogs have been trained and will not bite. However, many friends do not understand this It is very inhumane to arbitrarily refuse the guide dog to take the owner in and out.
6. Don’t blame it. The purpose of a guide dog is not to guide you from the beginning. As guide dog owners, we should be patient. At the beginning, guide dogs are only provided to us to avoid I hope everyone understands the role of obstacles. If you want to let them lead the way, you have to walk the same path at least several times.