Dog Health FAQs: Vaccines, Growth & Wellness
Expert answers to common dog health questions — vaccination schedules, growth milestones, spay/neuter timing, and preventive care. Based on WSAVA and AAHA guidelines.
Last updated: July 2026. Sources: AAFCO, AAHA, WSAVA, AAFP, ASPCA
This page aggregates 7 frequently asked questions from across our guides and calculators.
Dog Vaccination Schedule
Go to Dog Vaccination Schedule →Which vaccinations does my dog need?
Core vaccines (required for all dogs) include DHPP (Distemper, Hepatitis, Parvovirus, Parainfluenza) and Rabies. Non-core vaccines — Leptospirosis, Lyme Disease, Bordetella — depend on your region and lifestyle. Our schedule follows AAHA and WSAVA canine guidelines.
Source: Dog Vaccination Schedule
How often does my dog need booster shots?
After the puppy series (3 DHPP doses at 6-8, 12, and 16 weeks), DHPP boosters are every 3 years. Rabies boosters follow local laws (1-3 years). Non-core vaccines may need annual boosters. Our calculator generates a timeline tailored to your regional factors.
Source: Dog Vaccination Schedule
When do puppies need their first shots?
Puppies start their vaccination series at 6-8 weeks of age. Standard schedule: 6-8 weeks — 1st DHPP; 10-12 weeks — 2nd DHPP + optional Bordetella/Leptospirosis; 14-16 weeks — 3rd DHPP + Rabies. The series starts when maternal antibodies from the mother's milk begin to wane.
Source: Dog Vaccination Schedule
What happens if I miss a puppy vaccination?
Missing by more than 4 weeks can create a "window of susceptibility" where the puppy has neither maternal nor vaccine-induced protection. If you miss a dose: do not restart the series. Contact your vet to give the missed dose as soon as possible. Keep your puppy away from high-risk areas until fully vaccinated.
Source: Dog Vaccination Schedule
Puppy Growth Predictor
Go to Puppy Growth Predictor →How can I predict how big my puppy will get?
Our puppy growth predictor uses breed size growth curves. Enter your puppy's current age, weight, and expected adult size. The tool interpolates from standardized growth curves to estimate adult weight with ±15% variance. For mixed breeds, select the expected size category.
Source: Puppy Growth Predictor
When do puppies stop growing?
Small dogs reach full size by 10-12 months, medium dogs by 12-15 months, large dogs by 18-24 months, and giant breeds continue growing until 24-36 months. Growth plates (epiphyseal plates) close at different times by bone location — large breed puppies need controlled exercise until 18-24 months to protect joints.
Source: Puppy Growth Predictor
Spayed vs Unspayed Comparison
Go to Spayed vs Unspayed Comparison →When should I spay or neuter my dog?
Current AAHA and ASVAB guidelines recommend individualized timing based on breed size. Small breeds: 6-9 months. Large/giant breeds: 12-24 months (after growth plate closure to reduce orthopedic risks). Discuss your specific breed's cancer and joint risk profile with your veterinarian.
Source: Spayed vs Unspayed Comparison
Related Tools
References & Data Sources
Why Trust petsMetrics?
All content on petsMetrics is based on published veterinary guidelines from authoritative sources including AAHA, WSAVA, AAFCO, AAFP, and ASPCA. Our calculators use peer-reviewed formulas, and our toxicity data is compiled from the ASPCA Animal Poison Control Center database. Every claim is cited with its original source for independent verification.
Our team includes veterinary professionals and researchers who review all content for accuracy before publication. We follow a strict editorial policy: no anonymous sources, no unverified claims, and no commercial bias. When veterinary guidance evolves, we update our content accordingly.