Puppy Vaccination Schedule by Age: 6-16 Week Shots

Quick Answer: Puppy Vaccination Schedule

Use this puppy vaccination schedule as a vet-discussion checklist: most puppies start vaccines at 6-8 weeks, then get boosters every 3-4 weeks until at least 16 weeks old. Core puppy shots usually include DHPP or DA2PP, rabies, and leptospirosis. Bordetella, Lyme, and canine influenza depend on lifestyle, local disease risk, boarding/daycare needs, and your veterinarian's recommendation.

| Puppy age | Typical vaccines to discuss | | --- | --- | | 6-8 weeks | DHPP #1; bordetella if shelter, daycare, or boarding risk | | 10-12 weeks | DHPP #2; discuss leptospirosis first dose around 12 weeks; Lyme or canine influenza if recommended | | 14-16 weeks | DHPP #3; rabies; leptospirosis second dose if started; second doses for selected lifestyle vaccines | | 1 year | DHPP booster, rabies booster, leptospirosis booster, and risk-based boosters |

How Puppy Vaccines Work

Puppies are born with maternal antibodies from their mother's colostrum — the first milk. These antibodies provide critical early protection but also interfere with vaccination: they neutralize the vaccine before the puppy's own immune system can respond.

The problem is that maternal antibody levels decline at different rates in different puppies — anywhere from 6 to 16 weeks. This is why puppies get a series of vaccines, not just one. Each shot is essentially rolling the dice that maternal antibodies have dropped low enough for the vaccine to "take."

Core vs. Non-Core Vaccines

Core vaccines are recommended for ALL dogs regardless of lifestyle or geography:

• DHPP (Distemper, Hepatitis/Adenovirus-2, Parainfluenza, Parvovirus)
• Rabies (legally required in most jurisdictions)
• Leptospirosis (AAHA now recommends this as a core vaccine for dogs, typically starting at 12 weeks)

Non-core vaccines are given based on risk factors: geography, lifestyle, exposure:

• Bordetella (kennel cough) — required by most boarding facilities, groomers, and dog daycares
• Lyme disease (Borrelia burgdorferi) — recommended in high-tick regions (Northeast, Upper Midwest, Pacific Coast)
• Canine influenza (H3N2 and H3N8) — recommended for dogs in group settings; outbreaks occur in kennels and shelters

Guideline language can differ by country and clinic, so use the labels as a discussion tool, not a substitute for your veterinarian's local protocol. The practical question is: which vaccines are due at this visit, which need a second dose, and which are required by law, daycare, grooming, boarding, or local disease risk?

The Standard Puppy Schedule

6–8 Weeks

• DHPP #1: First core vaccine
• Bordetella: Optional at this age; intranasal form provides faster onset for shelters and high-risk situations

10–12 Weeks

• DHPP #2: Second booster
• Leptospirosis #1: Often discussed around 12 weeks; the series usually needs two doses
• Lyme #1: If recommended
• Canine influenza #1: If recommended

14–16 Weeks

• DHPP #3 (final puppy booster): This is the most critical shot in the series — it's the one most likely to catch the window where maternal antibodies have waned
• Rabies: Single dose, legally required. Valid for 1 year initially, then 3-year boosters thereafter (depending on state law and product used)
• Leptospirosis #2: Booster 2–4 weeks after first
• Lyme #2: Booster

1 Year (Adult Booster)

• DHPP 1-year booster: Critical — up to 50% of puppies that completed the initial series may still not be adequately protected without this booster
• Rabies 1-year or 3-year: Depending on product and local regulations
• Leptospirosis annual booster
• Lyme annual booster
• Bordetella: Every 6–12 months depending on risk

Adult Maintenance (After 1-Year Booster)

• DHPP: Every 3 years (AAHA recommendation)
• Rabies: Every 1–3 years per state law
• Leptospirosis: Often annual after the initial series
• Lyme, Bordetella, Canine influenza: Usually risk-based and often annual when used

Puppy Shots by Age: Common Search Questions

What shots does an 8-week puppy need?

At 8 weeks, many puppies are due for the first DHPP or DA2PP vaccine if it was not already given at 6 weeks. Your veterinarian may also review deworming, stool testing, parasite prevention, and bordetella if the puppy came from a shelter, will attend daycare, or will be boarded or groomed soon.

What shots does a 12-week puppy need?

At 12 weeks, many puppies are due for a DHPP booster. This is also a common visit to discuss the first leptospirosis dose and risk-based vaccines such as Lyme disease or canine influenza. If a vaccine requires a two-dose starter series, ask when the second dose is due before leaving the clinic.

What shots does a 16-week puppy need?

At 16 weeks, many puppies receive the final puppy DHPP booster and rabies vaccine if due under local law. Puppies that started leptospirosis, Lyme, or influenza may need second doses in this window. Your veterinarian may also give a personalized plan for when public walks, classes, boarding, and dog parks are lower risk.

What if puppy shots are late or records are missing?

Do not guess. Bring every record you have and let the clinic decide whether to continue, restart, or add boosters. Missing records are common after adoption, rescue, or breeder transfers. Your veterinarian will weigh age, timing, product labels, local disease risk, and legal rabies requirements.

What vaccines does a puppy need before daycare, grooming, or boarding?

Requirements vary by business, but many facilities ask for DHPP, rabies when age-eligible, and bordetella. Some also ask about canine influenza. Do not wait until the day before boarding: some vaccines need time to work, and some starter series need more than one dose.

The Parvo Warning

Parvovirus deserves special mention. It causes severe hemorrhagic gastroenteritis with a mortality rate of up to 91% without treatment and 5–20% even with intensive care. The virus is extraordinarily hardy — it survives in the environment for months to years and resists most disinfectants.

Puppies are most vulnerable during the 6–20 week window when maternal antibodies are declining but vaccine immunity hasn't fully kicked in. During this period:

• Avoid dog parks, pet stores, and high-traffic areas
• Socialize with known, fully vaccinated dogs in controlled environments
• Carry your puppy through the vet waiting room rather than letting them walk

Vaccine Reactions: What's Normal vs. Emergency

Normal (24–48 hours post-vaccine): Mild lethargy, slight decrease in appetite, mild soreness at injection site, low-grade fever.

Call your vet: Persistent vomiting or diarrhea, facial swelling, hives, difficulty breathing (anaphylaxis — rare but medical emergency).

Vaccine reactions are uncommon (roughly 1 in 250 dogs for any reaction; 1 in 10,000 for serious reactions) but small-breed dogs and dogs with a prior vaccine reaction history are at higher risk.

Puppy Vaccination Schedule FAQ

When do puppy shots start?

Most puppies start their vaccine series at 6-8 weeks old. Your veterinarian may adjust timing based on the puppy's age, health, local disease risk, shelter or breeder history, and previous vaccine records.

How often do puppies need vaccine boosters?

Puppies commonly receive boosters every 3-4 weeks until at least 16 weeks old. This repeated schedule helps cover the period when maternal antibodies are fading and the puppy's own immune response is developing.

Which puppy vaccines are core?

Core puppy vaccines usually include DHPP or DA2PP and rabies. AAHA also recommends leptospirosis as a core vaccine for dogs, commonly starting around 12 weeks. Bordetella, Lyme disease, and canine influenza depend on lifestyle, region, and exposure risk.

Does my puppy need the leptospirosis vaccine?

Ask your veterinarian, but leptospirosis is now commonly discussed as a core dog vaccine in AAHA-guided practices. Puppies usually need a two-dose starter series, and timing depends on age, product label, local disease risk, and clinic protocol.

Can my puppy go outside before all shots are complete?

Ask your veterinarian for local guidance. Many puppies can socialize in controlled, lower-risk settings with healthy vaccinated dogs, but dog parks, pet stores, and high-traffic dog areas are usually avoided until the vaccine series is complete.

What if my puppy shots are late?

Call your veterinarian and bring any vaccine records you have. The clinic may continue or adjust the series depending on the puppy's age, vaccine history, timing gaps, local risk, and rabies law.

What shots does a puppy need before daycare or boarding?

Many daycare, grooming, and boarding facilities ask for DHPP, rabies when age-eligible, and bordetella. Some also ask about canine influenza. Check requirements early because some vaccines need time or multiple doses before protection is expected.

Cost Expectations

If you are planning the first-year budget for a dog, compare routine vaccine costs with broader pet insurance cost expectations. For coverage decisions by age and breed risk, see our guide to the best pet insurance for dogs.

Puppy vaccine series: $75–$200 for core vaccines, typically split across 2–3 visits. Lifestyle vaccines and boosters may add $20–$50 each. Many low-cost vaccine clinics and humane societies offer core vaccines at reduced rates.