Canine socialization period (3 to 8 weeks)
A note on the names: “seniority classification” and “flight instinct” are the traditional labels from classic puppy-raising literature, and we keep them because they are the names you will hear from trainers and in books. What matters is the behavior each one describes, not the label.
Understanding your puppy's developmental stages can greatly influence how they grow into a well-rounded adult dog. Here's a quick guide to the key phases of your puppy's life and how you can support them through each one. Puppies should stay with their litter and their mother until at least eight weeks old: it is where bite inhibition and dog-to-dog manners start, and in most states rehoming earlier is against the law.
This stage usually happens before your puppy joins your home, but it shapes everything that follows. Puppies are learning essential doggy communication (body language, vocalizations, and behaviors) from their littermates and mother. This phase is all about understanding canine interactions and responses.
Puppies should stay with their litter and mom during this time.
Socialization period (8 to 12 weeks)
Eight to twelve weeks is the window to bring your puppy home. They should be exposed to a wide range of people, places, and experiences in a positive, stress-free way. Work through the ideas list in the socialization guide so their experiences are varied. You're laying the foundation for a well-adjusted adult dog.
This stage and the next one, seniority classification, together make up the 8-to-16-week sensitive window for socialization that the socialization guide describes: the part of it that's your job, once your puppy is home.
The rest of this guide
- Fear impact period (around 8-11 weeks)
- Seniority classification period (12 to 16 weeks)
- Two teething periods
- Adolescence (about 4 months to maturity)
- Flight instinct period (a few weeks, sometime between 4 and 8 months)
- Maturity
- The big picture
The full guide, and the step-by-step video exercises it pairs with, is included with Puppy Foundations, our at-home puppy course. A few minutes a day, from first steps to confident manners.
Free: the housetraining plan
The routine we give every puppy family, as a printable PDF with a one-page sheet for the fridge.
