Puppy Vaccination Schedule

A puppy vaccination schedule is a veterinarian-recommended timeline of core and non-core vaccines given to puppies during their first year of life. Core vaccines protect against distemper, parvovirus, adenovirus, and rabies, while non-core vaccines are recommended based on lifestyle and geographic risk factors.

In This Guide:

What Is a Puppy Vaccination Schedule?
How Puppy Vaccines Work
The Recommended Schedule
What Pet Owners Should Do
Frequently Asked Questions

What Is a Puppy Vaccination Schedule?

Puppies are born with some immunity passed from their mother through antibodies in colostrum (first milk). This maternal immunity fades between 6 and 16 weeks of age, creating a vulnerability window. Vaccinations bridge this gap by training the puppy’s own immune system to recognize and fight specific pathogens.

The schedule is designed to provide multiple doses (boosters) at timed intervals because a single dose isn’t enough to establish full immunity. Each booster strengthens the immune response until the puppy is fully protected.

How Puppy Vaccines Work

Vaccines contain weakened or inactivated forms of a virus or bacteria. When injected, the immune system produces antibodies against the pathogen without causing disease. If the puppy is later exposed to the real pathogen, their immune system recognizes and fights it quickly.

Vaccines are categorized as core (recommended for all puppies) and non-core (recommended based on risk):

Core vaccines: DHPP (distemper, hepatitis/adenovirus, parvovirus, parainfluenza) and Rabies
Non-core vaccines: Bordetella (kennel cough), Leptospirosis, Lyme disease, Canine influenza

The Recommended Schedule

Age	Core Vaccines	Non-Core (If Recommended)
6–8 weeks	DHPP (1st dose)	Bordetella
10–12 weeks	DHPP (2nd dose)	Leptospirosis, Lyme, Canine Influenza
14–16 weeks	DHPP (3rd dose), Rabies	Leptospirosis (2nd dose), Lyme (2nd dose)
12–16 months	DHPP booster, Rabies booster	Bordetella, Leptospirosis, Lyme (annual)

Note: This is a general guideline based on AAHA (American Animal Hospital Association) recommendations. Your veterinarian may adjust the schedule based on your puppy’s health, breed, and risk factors.

After the first year, most core vaccines shift to every 3 years (DHPP and Rabies), while non-core vaccines like Bordetella and Leptospirosis remain annual.

What Pet Owners Should Do

Start on time. Schedule your puppy’s first vet visit at 6–8 weeks of age. Don’t delay — the vulnerability window is real and parvovirus can be fatal in unvaccinated puppies.
Complete the full series. Missing a booster can leave your puppy unprotected. Follow through on all scheduled doses.
Limit exposure before full vaccination. Avoid dog parks, pet stores, and areas with unknown dogs until 1–2 weeks after the final DHPP booster (around 18 weeks). Safe socialization can still happen — carry your puppy or arrange playdates with known, vaccinated dogs.
Keep vaccination records. Most boarding facilities, training classes, and groomers require proof of current vaccinations.
Budget for the first year. Expect to spend $150–$300 on puppy vaccinations in the first year, depending on which non-core vaccines your vet recommends.

Frequently Asked Questions

How much do puppy vaccinations cost?

The total cost for the first-year puppy vaccination series is typically $150–$300 at a private veterinary clinic. Individual vaccine visits cost $50–$100 each. Low-cost vaccination clinics and pet store events may offer core vaccines for $20–$40 per visit.

What happens if I miss a puppy vaccine booster?

If a booster is delayed by a few weeks, your vet can usually continue the series without starting over. If several months have passed, your vet may recommend restarting the series to ensure full immunity. Contact your clinic as soon as possible if you’ve missed an appointment.

Are there side effects from puppy vaccines?

Mild side effects are common and include slight lethargy, mild fever, and soreness at the injection site for 24–48 hours. Serious reactions (facial swelling, difficulty breathing, vomiting) are rare but require immediate veterinary attention.

Can my puppy go outside before all vaccinations are done?

Your puppy can go outside in controlled, low-risk environments — your own yard, friends’ yards with vaccinated dogs. Avoid public dog areas like parks, pet stores, and sidewalks with high dog traffic until 1–2 weeks after the final DHPP booster at 14–16 weeks.

What is the DHPP vaccine?

DHPP is a combination vaccine that protects against four diseases: Distemper, Hepatitis (Adenovirus), Parainfluenza, and Parvovirus. It’s the most important core vaccine for puppies and requires 3 doses given 3–4 weeks apart, starting at 6–8 weeks of age.

Time for your puppy’s shots? Find a veterinary clinic near you on HeiBob to start your puppy’s vaccination schedule.