1, if you can keep it, come back two months later, because you are afraid that the dog seller will not feed the puppy well in order to save costs, and the nutrition is insufficient. My dog is like this.
2, if you are a novice, there is nothing you can do. It will take at least 3 months to hold back, so the survival rate is higher.
3. If the dog is four months old and slightly older, it is not recommended to keep it.