The reason why the puppy is kept on a leash is because the dog has not adapted to the leash yet. You can first put a collar on the leash or buy a collar for the dog to wear so that it can adapt. It may also be a kind of resistance and fear of the unfamiliar environment in the outside world, which is mostly caused by dogs not going out often. It may also be because the dog is tired from playing and is unwilling to walk and wants to lie down to rest.

Tip:

You should start wearing a collar on your dog when it is about three months old to allow it to get used to the collar. When you first put it on your dog, your dog may show resistance. At this time, you should tie the collar slightly loosely to ensure that it will not fall off naturally. Once your dog gets used to the looseness and width of the collar, change it to another one. A slightly wider collar will gradually become thicker as the dog grows, and the material of the collar will also change accordingly.