Puppy: Age Range & Life-Stage Reference
Written by FurStage Editorial TeamReviewed by FurStage Evidence Review
Baby0–1 yrs · ~0–15 human yrs
Rapid growth and the open socialization window — the foundation years for training, vaccinations and habits.
Puppy care tips
- Vaccinations: Complete the puppy vaccine series and parasite prevention on schedule.
- Socialization: Expose your puppy to people, sounds and other dogs while the window is open.
- Training: Start house-training and basic cues early — consistency beats intensity.
General guidance only — not veterinary advice and not for emergencies. Consult your vet for any health decision. Sources: AAHA canine, AAHA/AAFP feline.
Call your vet now if your pet has trouble breathing, collapses, has severe pain, repeated vomiting, seizures, heavy bleeding, or suddenly cannot stand.
Care checklist
Keep the next steps for dog
Get a lightweight checklist for this dog puppy stage. It is guidance, not veterinary advice.