Pet dog
Not every dog can be put on the collar and leash willingly. Many dogs are "stupefied" and unwilling to walk after wearing the collar and leash for the first time. Therefore, in about 4 or 5 months, that is, just before puppies get all vaccines, they can start to get in touch with and get used to the existence of leashes and collars.
Put a collar on your dog first. You can choose nylon with high comfort. The tightness is suitable for you to insert a finger but not take it off directly. Maybe in the morning, your dog will get used to the new gadgets around his neck. Then, tie a traction rope to it.
Take the dog to an open place outside the home, put it down with the leash tied, walk 2 meters away, and let it come. Instead of dragging the dog by force, call the dog's name, pat his legs, etc. At this time, the leash is in a relaxed state. If the dog still refuses to move, you can gently pull the leash to encourage him and give him a snack to lure him until he comes towards his parents.
At this point, you can pick up the leash and walk forward slowly. At this time, the leash is still in a relaxed state, and you can walk forward slowly within the speed that the dog can keep up with. If the dog performs well, you can give an appropriate reward in the middle. The training time should be controlled within 10 minutes, which can be repeated twice a day for several days.