The Socialization Window
There is a well-known “window of opportunity” when it comes to puppy socialization. This critical period typically begins around 3–4 weeks of age and extends through about 4 months old. Coincidentally, this overlaps with the time most puppies come home (around 8 weeks) and their first fear phase, which occurs between 8–12 weeks. Add in the fact that many puppies are not yet fully vaccinated, and socialization can suddenly feel confusing or even risky for owners.