After reading Baidu's answer, I can only say it is super absurd. There are more than a dozen different versions of the answers. Every time I say the dog is different. Some answers are Labrador, some are golden retrievers, and there are various versions such as German Shepherd, Chinese Pastoral Dog, etc.
Many owners may leave an impression in their hearts when they see these rankings at first sight, thinking that this kind of dog is loyal, and that the first choice to choose when they are raising them in the future. But the "most loyal dog" is actually similar to the "smarest dog". Whether the dog can be loyal to you or make the dog very smart is never without the guidance of its owner. Those rankings, etc., can be fun after reading them.
The most loyal dogs have no rankings, and it is impossible to have accurate rankings. All the reasons for ranking are purely irrelevant.
Why can I give such an answer so firmly, because if you are really familiar with and understand a creature like dog, you will understand very well that a dog is first a "dog creature", then a "dog of a certain breed", and finally "each dog individual".
These words may feel very difficult to understand, so I will explain them one by one.
Whether you raise a golden-retriever Corgi Poodle Husky Chinese Pastoral Dog, they are all "dogs". This species has their very unique characteristics. We must first regard them as "dogs" rather than some kind of dog in order to truly see through this animal. Dogs are dogs. They may be lively or quiet, smart or stupid, and very loyal.
Finally, every dog is an individual, and each individual has different personality traits, and they will be different from the way their owners live and get along with each other, and the way their owners treat them. This may have different effects and different visual definitions on the so-called "loyalty". For most owners, I believe that as long as you love your dog enough, you will feel that it is the most loyal to you, and it is the most loyal dog in the world.