Do Puppies Need 2 or 3 Vaccinations? The Complete Guide for New Pet Parents

October 1, 2025 |

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When you bring that fuzzy ball of puppy energy into your home, you know right away that your new puppy depends on you for, well, everything. It’s up to you to give your new puppy all the care they need every day. It can be a little intimidating — your puppy needs the best puppy food, plenty of attention, puppy training, puppy-safe toys, puppy socialization, a comfortable and safe place to sleep, and proper veterinary care. And that includes making sure to schedule puppy shots throughout your puppy’s first year.

Hey there, fellow dog lovers! If you’ve recently welcomed a fluffy bundle of joy into your home you’re probably overwhelmed with all the responsibilities that come with being a new puppy parent. One of the most confusing aspects? Figuring out your puppy’s vaccination schedule. I’ve been there and the question that kept me up at night was do puppies need 2 or 3 vaccinations?

The short answer Most puppies need at least 3 rounds of core vaccinations, not just 2. But there’s more to it than that simple answer. Let’s dig into the details so you can make sure your furry friend is properly protected!

Why Puppy Vaccinations Matter So Much

Before we dive into the numbers, let’s talk about WHY these shots are so important.

As a pet parent who’s seen how quickly puppies can get sick, I can’t stress enough how crucial these vaccinations are. Without proper protection, your pup remains vulnerable to several potentially fatal illnesses:

  • Parvovirus can cause severe dehydration and death within DAYS
  • Distemper attacks multiple body systems with a high mortality rate
  • Canine hepatitis can cause permanent liver damage
  • Rabies is fatal and legally required in most states

Beyond protecting your individual puppy, vaccinations contribute to community health through herd immunity. Plus, most doggy daycares, boarding facilities, and training classes require proof of vaccination.

Core vs. Non-Core Vaccines: What’s the Difference?

Not all vaccines are created equal! Let’s break down what your puppy absolutely needs versus what might be optional

Core Vaccines (Essential for ALL Puppies)

  • DHPP/DAPP: This combo vaccine protects against distemper, hepatitis (adenovirus), parvovirus, and parainfluenza
  • Rabies: Required by law in most states

Non-Core Vaccines (Based on Risk Factors)

  • Bordetella: For pups attending daycare, boarding, or training classes
  • Leptospirosis: Important for dogs exposed to wildlife or standing water
  • Lyme Disease: Critical in regions where Lyme-carrying ticks are common
  • Canine Influenza: For dogs with high exposure to other dogs

The Complete Puppy Vaccination Timeline

So, do puppies need 2 or 3 vaccinations? Well, they actually need a series of vaccinations, typically given every 2-4 weeks until they’re at least 16 weeks old. Here’s what a standard schedule looks like:

6-8 Weeks

  • First DHPP vaccine
  • Initial physical exam
  • Fecal parasite screening
  • Deworming treatment

10-12 Weeks

  • Second DHPP vaccine
  • Bordetella vaccine (if recommended)
  • First Leptospirosis vaccine (if recommended)
  • First Lyme vaccine (in endemic areas)

14-16 Weeks

  • Final DHPP vaccine
  • Rabies vaccine
  • Second Leptospirosis vaccine (if recommended)
  • Second Lyme vaccine (if recommended)
  • Canine influenza (if recommended)

One-Year Boosters

  • DHPP booster
  • Rabies booster
  • Any non-core vaccine boosters

So as you can see, the minimum is typically 3 rounds of the core vaccines, not just 2!

Why Do Puppies Need Multiple Rounds of the Same Vaccine?

This was something I found super confusing at first. If one shot works for humans, why do our puppies need multiple rounds?

The answer lies in maternal antibodies. When puppies nurse from their mother, they receive antibodies that help protect them from disease. Great, right? Well, these same antibodies can actually interfere with vaccines, making them less effective.

These maternal antibodies gradually decrease over the first few months of life, but the timeline varies for each puppy. By giving multiple vaccines at different points, we ensure that at least one dose will be effective once those maternal antibodies wear off.

What Happens If You Miss a Vaccination?

Life happens! Maybe you adopted a puppy with an unknown vaccination history, or perhaps you had to reschedule an appointment. Here’s what to do:

  • For minor delays (1-2 weeks): The series can usually continue as planned
  • For significant delays: Your vet might recommend restarting certain vaccines
  • For puppies with unknown history: Vets typically take a conservative approach and start a complete vaccination series

It’s never too late to get your puppy on track with vaccinations, even if they’re a bit older. Just be extra vigilant about avoiding exposure risks until they’re fully protected.

The Cost Factor: What to Expect

Let’s talk money, cuz we all know vet bills add up quick!

The average cost for puppy vaccinations ranges from $75-$100 per visit for core vaccines alone. The complete puppy vaccination series typically costs $200-$350 total, depending on which non-core vaccines your puppy needs.

If budget is a concern, consider these options:

  • Community vaccination clinics often provide core vaccines at reduced rates
  • Animal shelters and rescue organizations frequently host low-cost vaccination events
  • Veterinary schools may offer discounted services
  • Some manufacturers offer rebate programs for certain vaccines
  • Pet insurance or wellness plans can help offset costs

Socialization During the Vaccination Period: The Big Dilemma

One of the toughest challenges for new puppy parents is balancing socialization with safety during the vaccination period. The critical socialization window (6-14 weeks) overlaps with the time when puppies are still vulnerable to disease.

Safe socialization options include:

  • Puppy kindergarten classes that verify vaccination status of all participants
  • Controlled playdates with fully vaccinated, healthy adult dogs
  • Carrying your puppy in public to experience sights and sounds without touching potentially contaminated surfaces
  • Home visits from friends and family (who don’t have unvaccinated dogs)

Common Vaccination Side Effects to Watch For

Most puppies experience minimal to no side effects from vaccines. When reactions do occur, they’re typically mild and might include:

  • Mild soreness or swelling at the injection site
  • Slight lethargy for 24-48 hours
  • Temporary reduced appetite
  • Low-grade fever

Serious reactions are rare but require immediate attention. Contact your vet ASAP if you notice:

  • Facial swelling
  • Hives or itchy skin
  • Vomiting or diarrhea
  • Difficulty breathing
  • Collapse

FAQs About Puppy Vaccinations

Can I bathe my puppy after vaccinations?

It’s best to wait 24-48 hours after vaccinations before bathing your puppy. This allows injection sites to seal completely.

When can puppies safely go to dog parks?

Puppies should avoid dog parks until 7-14 days after completing their ENTIRE vaccination series, typically around 16-17 weeks of age.

Do indoor-only puppies need all these vaccines?

Even indoor puppies need core vaccines including DHPP and rabies, as these diseases can be transmitted through multiple routes. However, some non-core vaccines might be less essential.

Is it too late to vaccinate my older puppy?

No, it’s never too late to vaccinate a dog, even if they’re older. Your vet can create an appropriate catch-up schedule.

The Bottom Line: 3 Rounds, Not 2

So, to answer the burning question: Do puppies need 2 or 3 vaccinations? The answer is that most puppies need at least 3 rounds of their core vaccines, plus appropriate non-core vaccines based on their lifestyle and risk factors.

Remember, this vaccination schedule isn’t just a suggestion—it’s a crucial investment in your puppy’s long-term health. These carefully timed immunizations provide protection against devastating diseases that once claimed countless canine lives.

While following the recommended puppy vaccination schedule requires several vet visits in those first few months, this early commitment establishes a foundation for lifelong wellness. Beyond the vaccines themselves, these appointments allow your veterinarian to monitor growth, development, and behavior during this critical period.

By prioritizing this essential preventative care, you’re giving your new family member the best possible start in life—and setting the stage for many happy, healthy years together!

Have you started your puppy’s vaccination schedule yet? Share your experience in the comments below!


Disclaimer: This article is intended as general guidance and does not constitute health or other professional advice. Always consult with your veterinarian for personalized recommendations for your puppy’s specific needs.

do puppies need 2 or 3 vaccinations

How Much Do Puppy Vaccinations Cost?

How much puppy vaccinations will cost depends on several factors. Where you live is a big one: Veterinarians in crowded and expensive urban areas will generally charge more than a rural vet in a small town. You may be able to find low-cost clinics providing rabies vaccinations sponsored by your local municipal government. But no matter what the range in costs, some vaccines, such as the “core vaccines” and rabies, are necessary.

  • The average cost can average around $75—100. These will include the core vaccines, which are administered in a series of three: at 6-, 12-, and 16 weeks old.
  • The core vaccines include the DHLPP (distemper, hepatitis, leptospirosis, parvo, and parainfluenza). Your pup will also need a rabies vaccination, which is usually around $15—20. (Some clinics include the cost of the rabies vaccination.)
  • Often animal shelters charge less for vaccines — approximately $20 — or are even free. If you acquired your dog from a shelter, he would most likely have been vaccinated, up until the age when you got him.

The initial puppy vaccination costs during the first year are higher than during adulthood.

Which Shots Do Puppies Need?

Going to the vet over several months for a series of puppy vaccinations—and then for boosters or titers throughout your dog’s life—may seem inconvenient, but the diseases that vaccinations will shield our puppies and dogs from are dangerous, potentially deadly, and, thankfully, mostly preventable.

We read about so many different dog vaccinations, for so many different illnesses, that it can sometimes be confusing to know which vaccinations puppies need and which puppy shots are important but optional. Here is an overview of the diseases that puppy vaccinations will help your pet avoid.

This highly infectious bacterium causes severe fits of coughing, whooping, vomiting, and, in rare cases, seizures and death. It is the primary cause of kennel cough. There are injectable and nasal spray vaccines available.

If you plan on boarding your puppy in the future, attending group training classes, or using dog daycare services, often proof of this vaccination will usually be required.

A severe and contagious disease caused by a virus that attacks the respiratory, gastrointestinal (GI), and nervous systems of dogs, raccoons, skunks, and other animals, distemper spreads through airborne exposure (through sneezing or coughing) from an infected animal. The virus can also be transmitted by shared food and water bowls and equipment. It causes discharges from the eyes and nose, fever, coughing, vomiting, diarrhea, seizures, twitching, paralysis, and, often, death. This disease used to be known as “hard pad” because it causes the footpad to thicken and harden.

There is no cure for distemper. Treatment consists of supportive care and efforts to prevent secondary infections, control symptoms of vomiting, seizures and more. If the animal survives the symptoms, it is hoped that the dog’s immune system will have a chance to fight it off. Infected dogs can shed the virus for months.

Infectious canine hepatitis is a highly contagious viral infection that affects the liver, kidneys, spleen, lungs, and the eyes of the affected dog. This disease of the liver is caused by a virus that is unrelated to the human form of hepatitis. Symptoms range from a slight fever and congestion of the mucous membranes to vomiting, jaundice, stomach enlargement, and pain around the liver. Many dogs can overcome the mild form of the disease, but the severe form can kill. There is no cure, but doctors can treat the symptoms.

This is one of several viruses that can contribute to kennel cough.

The canine coronavirus is not the same virus that causes COVID-19 in people. COVID-19 is not thought to be a health threat to dogs, and there is no evidence it makes dogs sick. Canine coronavirus usually affects dogs’ gastrointestinal systems, though it can also cause respiratory infections. Signs include most GI symptoms, including loss of appetite, vomiting, and diarrhea. Doctors can keep a dog hydrated, warm, and comfortable, and help alleviate nausea, but no drug kills coronaviruses.

When your puppy is around 12-to-16 weeks, talk to your vet about starting a heartworm preventive medication. Though there is no vaccine for heartworm in dogs, it is preventable with regularly administered heartworm medication that your veterinarian will prescribe.

The name is descriptive — these worms lodge in the right side of the heart and the pulmonary arteries (that send blood to the lungs), though they can travel through the rest of the body and sometimes invade the liver and kidneys. The worms can grow to 14 inches long and, if clumped together, block and injure organs.

A new heartworm infection often causes no symptoms, though dogs in later stages of the disease may cough, become lethargic, lose their appetite or have difficulty breathing. Infected dogs may tire after mild exercise. Unlike most of the conditions listed here, which are passed by urine, feces, and other body fluids, heartworms are transmitted by mosquitoes. Therefore, diagnosis is made via a blood test and not a fecal exam.

Also known as infectious tracheobronchitis, kennel cough results from inflammation of the upper airways. It can be caused by bacterial, viral, or other infections, such as Bordetella and canine parainfluenza, and often involves multiple infections simultaneously. Usually, the disease is mild, causing bouts of harsh, dry coughing; sometimes it’s severe enough to spur retching and gagging, along with a loss of appetite. In rare cases, it can be deadly. It is easily spread between dogs kept close together, which is why it passes quickly through kennels. Antibiotics are usually not necessary, except in severe, chronic cases. Your vet may prescribe a dog-safe cough suppressant to help your dog (and you) get some rest, and some dog-safe throat soothers can help make a dog more comfortable.

Unlike most diseases on this list, Leptospirosis is caused by bacteria, and some dogs may show no symptoms at all. Leptospirosis can be found worldwide in soil and water. It is a zoonotic disease, meaning that it can be spread from animals to people. When symptoms do appear, they can include fever, vomiting, abdominal pain, diarrhea, loss of appetite, severe weakness and lethargy, stiffness, jaundice, muscle pain, infertility, kidney failure (with or without liver failure). Antibiotics are effective, and the sooner they are given, the better.

Unlike the famous “bull’s-eye” rash that people exposed to Lyme disease often spot, no such telltale symptom occurs in dogs. Lyme disease (or borreliosis) is an infectious, tick-borne disease caused by a type of bacteria called a spirochete. Transmitted via ticks, an infected dog often starts limping, his lymph nodes swell, his temperature rises, and he stops eating. The disease can affect his heart, kidney, and joints, among other things, or lead to neurological disorders if left untreated. If diagnosed quickly, a course of antibiotics is extremely helpful, though relapses can occur months or even years later.

Talk to your vet about when your puppy will be old enough for tick preventatives. Once your puppy is old enough, keep your dog on tick preventative medication, topicals, or wearables to help stop ticks from biting in the first place.

Parvo is a highly contagious virus that affects all dogs, but unvaccinated dogs and puppies less than four months of age are at the most risk to contract it. The virus attacks the gastrointestinal system and creates a loss of appetite, vomiting, fever, and often severe, bloody diarrhea. Extreme dehydration can come on rapidly and kill a dog within 48-to-72 hours, so prompt veterinary attention is crucial. There is no cure, so keeping the dog hydrated and controlling the secondary symptoms can keep him going until his immune system beats the illness.

Rabies is a viral disease of mammals that invades the central nervous system, causing headache, anxiety, hallucinations, excessive drooling, fear of water, paralysis, and death. It is most often transmitted through the bite of a rabid animal. Treatment within hours of infection is essential, otherwise, death is highly likely. Most states require regular rabies vaccinations. Check with your vet about rabies vaccination laws and requirements in your area.

Talk with your veterinarian about more information and guidance on necessary and optional vaccinations.

The first thing to know is that there is not just one puppy vaccination schedule for all dogs. Factors such as which part of the country you live in, and your dog’s individual risk factors will come into play. Some dogs do not need every vaccine. This decision is between you and your veterinarian. Always discuss puppy vaccinations at your regularly scheduled appointments.

That said, here is a generally accepted guideline of the puppy vaccination schedule for the first year.

Puppy’s Age Recommended Vaccinations Optional Vaccinations
6 — 8 weeks Distemper, parvovirus Bordetella
10 — 12 weeks DHPP (vaccines for distemper, adenovirus [hepatitis], parainfluenza, and parvovirus) Influenza, Leptospirosis, Bordetella, Lyme disease per lifestyle as recommended by veterinarian
16 — 18 weeks DHPP, rabies Influenza, Lyme disease, Leptospirosis, Bordetella per lifestyle
12 — 16 months DHPP, rabies Coronavirus, Leptospirosis, Bordetella, Lyme disease
Every 1 — 2 years DHPP Influenza, Coronavirus, Leptospirosis, Bordetella, Lyme disease per lifestyle
Every 1 — 3 years Rabies (as required by law) none

Do puppies need 2 or 3 vaccinations?