Not every dog can become a guide dog, because this kind of dog requires strict training to be employed, and many dogs are born unable to become guide dogs due to their poor obedience. At present, the more common guide dogs include Labrador Retriever, Golden Retriever, German Wolfdog, etc.

The Labrador should be the most common guide dog, not only It is because the Labrador's IQ is high enough, and it is docile enough, obedient enough, and loves work very much, so it is easy to be trained as a guide dog.