Bringing home a puppy usually comes with a surprisingly long list of questions.

When should vaccinations start?

How many does a puppy need?

Why do they need more than one injection?

When is it safe to go outside?

What is a “core” vaccine?

And why can two perfectly responsible veterinarians recommend slightly different schedules?

The answer is that there is no single puppy vaccination calendar that applies identically to every dog everywhere in the world.

Vaccination plans depend on:

• the puppy's age;
• previous vaccination history;
• maternally derived antibodies;
• local disease risk;
• geography;
• lifestyle;
• vaccine products available;
• local legislation;
• and the veterinarian's clinical assessment.

However, there is an important global framework.

The 2024 World Small Animal Veterinary Association (WSAVA) guidelines recommend starting the primary puppy series against canine distemper virus, canine adenovirus and canine parvovirus at approximately 6–8 weeks of age, then repeating vaccination every 2–4 weeks until at least 16 weeks of age.

That is the key principle to understand.

Not:

“My puppy needs exactly three injections.”

But:

“My puppy needs appropriately timed doses through the period when maternal antibodies may interfere with vaccination.”

Key takeaways

• Puppy vaccination commonly begins at around 6–8 weeks.
• WSAVA recommends repeating the main core viral vaccines every 2–4 weeks until at least 16 weeks of age.
• The dose given at 16 weeks or older is particularly important because maternally derived antibodies have usually fallen sufficiently for most puppies to respond to vaccination.
• WSAVA's 2024 guidance recommends either antibody testing after the initial series or an additional core vaccination at or shortly after 26 weeks of age.
• Rabies vaccination depends on local legislation and disease risk.
• Leptospirosis recommendations vary somewhat between global and regional guidelines.
• Lifestyle-based vaccines may include Bordetella, canine influenza and Lyme disease.
• A vaccination schedule should be created by your veterinarian for the individual puppy.
• Vaccination does not mean a puppy should receive every vaccine available.
• Early behavioural socialisation is still important and should be planned safely with veterinary guidance.

Why do puppies need several vaccinations?

The main reason is maternal antibodies.

Puppies receive antibodies from their mother, particularly through colostrum shortly after birth.

These antibodies help protect young puppies.

But they create a complication.

They can also interfere with a vaccine before the puppy's own immune system has had a chance to respond fully.

Over time, maternal antibody levels decline.

The difficulty is that this happens at different rates in different puppies.

One puppy may respond well to a vaccine at 10 weeks.

Another may still have enough maternal antibody to reduce the response.

This is why veterinarians don't simply vaccinate every puppy once at eight weeks and consider the job finished.

WSAVA recommends repeated vaccination against distemper, adenovirus and parvovirus through at least 16 weeks because this helps reduce the period in which a puppy might no longer have adequate maternal protection but has not yet developed reliable active immunity.

What are the main core puppy vaccines?

For the global WSAVA framework, the principal core viral vaccines for puppies protect against:

Canine distemper virus — CDV

A potentially severe infectious disease affecting multiple body systems.

Canine adenovirus — CAV

Vaccination protects against important adenovirus-associated disease, including infectious canine hepatitis.

Canine parvovirus — CPV

A highly contagious disease that can cause severe gastrointestinal illness, particularly in young dogs.

WSAVA recommends these vaccines for puppies worldwide because of their seriousness and broad relevance.

They are commonly administered together in a combination vaccine.

You may see abbreviations such as:

DHP

or variations such as:

DHPP / DAPP

depending on the country, manufacturer and whether parainfluenza is included.

Do not rely on the abbreviation alone.

Your vaccination record should specify what your puppy actually received.

A typical puppy vaccination timeline

A useful way to understand the schedule is as a framework, not a prescription.

Approximate age	What may happen
6–8 weeks	First core vaccination against distemper, adenovirus and parvovirus may begin
8–12 weeks	Further core vaccination depending on when the series began
12–16 weeks	Additional core doses; other vaccines may also begin depending on risk and region
16 weeks or older	Important final dose of the initial CDV/CAV/CPV puppy series
Around 26 weeks or later	WSAVA recommends additional core vaccination or appropriate serological testing
Later follow-up	Revaccination schedule determined by vaccine, age, risk, product and local guidance

WSAVA specifically recommends starting CDV/CAV/CPV at 6–8 weeks and repeating every 2–4 weeks until at least 16 weeks.

AAHA's North American guideline similarly recommends at least three doses of the combination vaccine between 6 and 16 weeks, administered 2–4 weeks apart.

The table above should therefore be understood as an illustration of the vaccination journey, not something guardians should use to schedule injections themselves.

Why is the vaccination at 16 weeks or older so important?

Because maternally derived antibodies may still interfere with vaccination earlier in life.

WSAVA describes the vaccination given at 16 weeks of age or older as particularly important because maternal antibodies will have declined substantially in most puppies by then.

AAHA makes a similar point for parvovirus and distemper, noting that maternal antibodies may persist well into the early puppy period and recommending repeated vaccination through more than 16 weeks.

This explains why the number of puppy vaccinations can vary.

A puppy starting at:

6 weeks

may receive more doses than one beginning at:

10 weeks

while both could still finish the primary series at or after 16 weeks.

The goal is appropriate immune protection.

Not reaching a predetermined number of injections.

Does every puppy need exactly three vaccinations?

No.

“Three puppy vaccines” is a useful shorthand in some situations, but it is not a universal scientific rule.

The number depends largely on:

• when the first dose is given;
• the interval between doses;
• which vaccine is being used;
• local protocols;
• and the puppy's circumstances.

WSAVA explicitly notes that the number of primary core doses varies according to the starting age and chosen intervals.

The more accurate rule is:

core viral vaccinations should continue at appropriate intervals through at least 16 weeks of age.

What happens at around 26 weeks?

This is an important update that many older puppy schedules do not show.

Even after a core vaccination at 16 weeks, WSAVA notes that a small percentage of puppies may still fail to respond adequately because maternal antibodies can occasionally persist.

Its 2024 guidelines therefore recommend either:

• serological testing at least four weeks after the final puppy vaccination, or
• an additional core vaccination at or shortly after 26 weeks of age.

This recommendation replaces the older WSAVA concept of waiting until approximately 12–16 months for the first core “annual booster.”

Your veterinarian can advise whether this approach is appropriate and how it fits with locally licensed vaccine products.

What about the traditional 12-month booster?

You may still encounter vaccination schedules referring to a booster at around one year.

There are differences among major guidelines.

AAHA's canine vaccination guidelines recommend a combination-vaccine booster within one year after completion of the initial puppy series, followed by revaccination at three-year intervals for the principal core viral components.

WSAVA's 2024 guidance instead recommends bringing this additional protection forward to approximately 26 weeks, rather than waiting until a year or more, for puppies not confirmed protected by serology.

This does not mean one source is telling guardians to improvise between competing schedules.

It means vaccination protocols differ between professional guidelines, regions, vaccine labels and clinical practice.

Your veterinarian should determine the schedule applicable to your puppy.

What is the rabies vaccine schedule for puppies?

Rabies vaccination is particularly dependent on:

• local law;
• geography;
• vaccine licence;
• travel requirements;
• and regional rabies risk.

AAHA therefore lists rabies vaccination as:

“as required by law.”

WSAVA takes a broader global-health position: where rabies is endemic, dogs should be vaccinated because vaccination protects both animals and people, even where legislation does not independently require it.

The minimum age, booster timing and legal validity can vary by country and product.

So do not copy a rabies timetable from a website based in another country.

Follow:

your veterinarian + local legislation + official travel rules where relevant.

Does my puppy need leptospirosis vaccination?

Possibly—and in many regions, strongly yes.

Leptospirosis is an important bacterial disease that can affect dogs and can also infect people.

But its classification illustrates why vaccination advice must consider geography.

WSAVA

The 2024 global guidelines state that where canine leptospirosis is endemic, relevant disease-causing serogroups are known and suitable vaccines are available, vaccination of all dogs is highly recommended and leptospirosis should be considered core in those locations.

AAHA

AAHA updated its North American canine vaccination guidelines in 2024 to classify leptospirosis vaccination as core for all dogs, rather than only dogs considered at obvious lifestyle risk.

That difference reflects geographic and guideline context.

It does not mean guardians should decide for themselves that the vaccine is unnecessary.

Discuss local leptospirosis risk with your veterinarian.

When can puppies receive leptospirosis vaccination?

Exact product instructions vary.

AAHA's current guideline describes a primary course of two doses of a four-serovar leptospirosis vaccine, 2–4 weeks apart, starting at approximately 12 weeks of age.

However, licensed ages and protocols differ among countries and products.

Always follow the veterinary practice's schedule.

What are non-core or lifestyle-based vaccines?

A non-core vaccine is not necessarily an unimportant vaccine.

It means it is recommended according to individual exposure risk rather than automatically for every dog in every setting.

AAHA lists examples including:

• Bordetella bronchiseptica
• canine influenza
• Lyme disease
• and, in specific geographic contexts, other vaccines.

Your veterinarian may ask about your puppy's expected lifestyle.

For example:

Will your dog:

• attend puppy classes?
• use daycare?
• stay in boarding facilities?
• visit dog parks?
• travel?
• live in or visit areas with ticks?
• participate in shows?
• spend substantial time with groups of dogs?

The answers can influence which additional vaccines are appropriate.

Does my puppy need a Bordetella vaccine?

Sometimes.

Bordetella bronchiseptica is associated with infectious respiratory disease and may be particularly relevant for dogs exposed to groups of other dogs.

Risk can be higher in environments such as:

• boarding facilities;
• daycare;
• training groups;
• shelters;
• or other high-contact settings.

AAHA classifies Bordetella vaccination as non-core and recommends it according to exposure risk.

Some boarding or daycare businesses also require vaccination as part of their own admission policies.

The exact product and route may affect the schedule.

Ask your veterinarian which approach is appropriate.

Does my puppy need a canine influenza vaccine?

Not necessarily every puppy.

Canine influenza vaccination is typically considered according to:

• geographic disease activity;
• contact with other dogs;
• travel;
• boarding;
• daycare;
• and other exposure factors.

AAHA classifies canine influenza vaccination as lifestyle/risk based.

Your veterinarian is better placed to assess current local risk than a generic global vaccination chart.

Does my puppy need a Lyme disease vaccine?

That depends strongly on geography and tick exposure.

Lyme disease risk varies according to:

• where you live;
• where you travel;
• tick prevalence;
• outdoor activity;
• and local epidemiology.

AAHA categorises Lyme vaccination as non-core and recommends assessing the individual dog's risk.

Vaccination also does not eliminate the importance of appropriate tick prevention.

Discuss both with your veterinarian.

What does “core vaccine” actually mean?

A core vaccine is one considered broadly appropriate because of factors such as:

• severity of disease;
• widespread disease risk;
• public-health importance;
• or major benefit across the dog population.

But even the word core requires context.

AAHA's current North American framework considers the core group to include:

• distemper;
• adenovirus;
• parvovirus;
• leptospirosis;
• rabies;
• and potentially parainfluenza depending on vaccine combinations.

WSAVA's global framework strongly recognises CDV, CAV and CPV as universal core viral vaccines while treating rabies and leptospirosis according to relevant geographic disease circumstances.

This is another reason a global 1KAHU article should not present one country-specific vaccine list as universal worldwide advice.

When can my puppy go outside after vaccination?

This is one of the most common—and most misunderstood—questions.

There isn't a globally correct answer such as:

“Never let your puppy outside until two weeks after the final vaccine.”

The balance involves two real considerations:

Infectious-disease risk

Young puppies may not yet have reliable vaccine protection.

Behavioural development

Early socialisation is critically important.

WSAVA explicitly supports early puppy socialisation and notes that appropriate socialisation can occur while puppies are still completing their initial vaccination series. It cites evidence showing a low risk of parvovirus disease in puppies participating in appropriately managed early socialisation classes.

That does not mean allowing an incompletely vaccinated puppy unrestricted exposure to high-risk environments.

It means:

infection prevention and behavioural development should be balanced, not treated as mutually exclusive.

Ask your veterinarian about the actual disease risk in your area and how to socialise your puppy safely.

What might safer early socialisation look like?

Depending on local disease risk and veterinary advice, possibilities might include:

• meeting healthy, appropriately vaccinated dogs known to you;
• being carried through new environments;
• experiencing different people, sounds and surfaces;
• controlled puppy classes with appropriate hygiene and vaccination policies;
• car journeys;
• observing the outside world without roaming in high-risk areas.

Avoid assuming that:

socialisation = dog park.

Good socialisation is controlled exposure to the world.

Not uncontrolled exposure to every dog and environment available.

What is parvovirus and why is it such a concern for puppies?

Canine parvovirus is a highly contagious virus that can cause severe illness, particularly in young dogs.

AAHA considers parvovirus vaccination core for every dog regardless of geography.

Puppies are particularly vulnerable during the period when maternal antibodies are fading but reliable active immunity has not yet developed.

This is part of the reason the puppy vaccine series extends over several weeks.

AAHA notes that failure to complete the puppy vaccination series is one factor associated with parvovirus cases in young dogs.

If your puppy develops symptoms such as severe vomiting, diarrhoea, marked lethargy or other significant illness, contact a veterinarian promptly.

What is canine distemper?

Canine distemper is a serious infectious viral disease affecting dogs and several other species.

It can involve:

• respiratory signs;
• gastrointestinal disease;
• neurological problems;
• and systemic illness.

AAHA considers distemper vaccination core regardless of geography and recommends starting puppy vaccination at 6–8 weeks with repeat doses through more than 16 weeks because maternal antibodies may interfere with earlier vaccination.

What is canine adenovirus?

Canine adenovirus vaccination helps protect against serious adenovirus-associated disease, including infectious canine hepatitis.

It is one of the major components of the global puppy core vaccination programme alongside distemper and parvovirus.

Your puppy may receive these components in the same combination vaccine rather than as separate injections.

What if I don't know whether my puppy has already been vaccinated?

This is common with:

• rescue puppies;
• imported puppies;
• privately rehomed dogs;
• incomplete breeder paperwork;
• or uncertain vaccination histories.

Do not guess.

Take every available record to your veterinarian.

Useful evidence includes:

• vaccination certificate;
• veterinary stamp;
• vaccine label/sticker;
• date;
• provider;
• microchip-linked records where applicable.

AAHA advises that when vaccination status is unknown, the benefits of vaccination generally outweigh the risks and the veterinarian should determine how to proceed.

The correct plan depends on the puppy's age and credible history.

What if my puppy misses a vaccination?

Do not automatically assume the entire series needs to restart.

Contact your veterinary practice.

What happens next can depend on:

• which vaccine was missed;
• puppy's age;
• time since the previous dose;
• vaccine product;
• and local guidelines.

AAHA specifically recommends referring to manufacturer guidance where vaccines are overdue rather than applying one universal restart rule.

The important thing is to get the schedule back on track promptly.

Are vaccines 100% effective?

No vaccine provides a guarantee that an individual animal can never develop disease.

Protection depends on factors including:

• immune response;
• maternal antibodies;
• vaccine handling;
• vaccine administration;
• completion of the schedule;
• individual health;
• and disease exposure.

However, vaccination is a cornerstone of preventive veterinary medicine and substantially reduces the risk of important infectious diseases.

AAHA describes canine vaccination as one of the most effective preventive tools for protecting canine health and also notes the public-health benefits of vaccination against zoonotic diseases.

Can puppies have vaccine reactions?

Adverse reactions can occur, as with other medicines.

Many dogs experience no obvious problems.

Some may have short-lived, relatively mild effects.

More significant reactions are less common but require veterinary attention.

Ask your veterinarian what they expect after vaccination and what signs should prompt a call.

If your puppy has previously had a suspected vaccination reaction, ensure this is clearly recorded and tell the veterinary team before future vaccination.

Do not independently decide to stop all future vaccination based on a previous reaction.

The veterinarian can assess:

risk of disease versus risk of revaccination

for the individual puppy.

When should I contact the vet after vaccination?

Follow the specific post-vaccination advice provided by your clinic.

Contact a veterinary professional promptly if your puppy appears significantly unwell or develops concerning symptoms such as:

• breathing difficulty;
• collapse;
• severe facial swelling;
• repeated vomiting;
• profound weakness;
• or another rapid or severe reaction.

For an emergency, contact an emergency veterinary provider rather than waiting for a routine response.

Related guide: Pet Emergency Information: What Every Guardian Should Keep Ready

Does a puppy need vaccination if they mostly stay indoors?

Indoor lifestyle can reduce some exposures.

It does not eliminate infectious-disease risk.

Dogs leave the home for:

• veterinary care;
• travel;
• exercise;
• boarding;
• grooming;
• training;
• emergencies.

People and objects can also introduce some infectious material into an environment.

Core vaccination recommendations are therefore not based simply on whether a puppy spends most of the day indoors.

Lifestyle is much more influential when determining additional risk-based vaccines.

Does a small puppy need a smaller vaccine dose?

Do not modify vaccine doses based on body size yourself.

Vaccines are licensed according to specific veterinary product instructions rather than being scaled like many medications.

A Chihuahua puppy and a Great Dane puppy should each receive vaccines according to the licensed product and veterinary guidance.

Your veterinarian will select and administer the appropriate product.

Can several vaccines be given at the same appointment?

Often, yes.

Veterinarians may administer more than one appropriate vaccine during the same visit.

But the decision depends on factors such as:

• puppy's health;
• vaccine products;
• previous reactions;
• age;
• risk;
• and individual clinical judgement.

Do not divide or delay vaccines yourself because of information found online.

Discuss any concerns with the veterinarian.

Are vaccine schedules the same in every country?

No.

This is particularly important for a global platform like 1KAHU.

Schedules vary because of:

• disease prevalence;
• vaccine availability;
• local licensing;
• public-health policy;
• rabies status;
• legal requirements;
• travel rules;
• and professional guidelines.

For example:

• rabies timing is heavily influenced by law;
• leptospirosis importance varies geographically even though it is widespread;
• Lyme disease risk is highly regional;
• licensed combination products vary by market.

Therefore:

The app should know where the pet lives.

But it still should not independently prescribe a vaccine schedule.

How should puppy vaccination reminders work in an app?

This is an important product distinction.

The safest model is:

Veterinarian records

Next vaccination/review recommended: 15 October

↓

1KAHU stores

• vaccine;
• previous administration date;
• source record;
• professional;
• recommended next date.

↓

1KAHU reminds

“Luna's vaccination review is due on 15 October.”

That is very different from:

“Luna is 12 weeks old, therefore 1KAHU has decided she needs vaccine X today.”

The first is:

care coordination.

The second becomes:

medical recommendation.

1KAHU should focus on the former.

What should you keep in your puppy's vaccination record?

After every appointment, retain:

• vaccine or diseases covered;
• date administered;
• veterinary practice;
• veterinarian where recorded;
• certificate;
• vaccine/product information if supplied;
• next recommended review date;
• any documented adverse reaction.

Do not discard earlier vaccination records once a booster has been given.

The history itself can matter.

Related guide: Pet Vaccination Records: What to Keep and Why They Matter

A practical puppy vaccination checklist

Before the first appointment

• Ask breeder/rescue for vaccination records
• Confirm puppy's date of birth
• Confirm microchip details where relevant
• Choose a veterinary practice
• Bring previous records
• Ask about local infectious-disease risk

At the appointment

• Ask which vaccines are being given
• Ask which are core versus lifestyle/risk based
• Ask when the next dose is due
• Ask when controlled socialisation is appropriate
• Ask what reactions to monitor for

During the puppy series

• Keep appointments on schedule
• Store vaccination certificates
• Avoid unnecessary high-risk exposure
• Continue appropriate controlled socialisation
• Update the vaccination record after every dose

After the primary series

• Confirm whether another core dose or serology around 26+ weeks is advised
• Confirm rabies requirements
• Confirm leptospirosis schedule
• Confirm lifestyle-based vaccines
• Record the next veterinary review

Example: why two puppies may have different schedules

Consider two puppies.

Puppy A

• Starts vaccination at 6 weeks
• Lives in an area where infectious-disease risk is significant
• Will attend daycare
• Lives where leptospirosis is relevant
• Rabies vaccination is legally required

Puppy B

• Starts at 10 weeks
• Has documented previous vaccination
• Lives in a different country
• Has minimal contact with groups of dogs
• Different regional vaccine availability and rabies rules

Both puppies need appropriate protection.

But they may not receive:

• identical vaccines;
• identical numbers of doses;
• or identical dates.

That is why a “complete guide” should help you understand vaccination principles.

It should not attempt to replace your veterinarian's schedule.

Key facts

Core viral puppy vaccination typically starts at 6–8 weeks. WSAVA recommends beginning vaccination against distemper, adenovirus and parvovirus at this age.

The series should continue through at least 16 weeks. Core doses are generally repeated every 2–4 weeks during this period.

The ≥16-week dose is particularly important. Maternal antibodies have usually declined substantially by this stage, allowing most puppies to respond.

WSAVA now recommends protection be reassessed around 26 weeks. This may involve an additional core vaccination or appropriate serological testing.

Rabies schedules vary by location. Legal requirements and regional disease risk determine when vaccination is required.

Leptospirosis recommendations depend partly on guideline and geography. AAHA now considers it core for all dogs in its North American guidelines, while WSAVA recommends it as core in regions where disease risk and suitable vaccines support that approach.

Non-core does not mean optional in practice. A lifestyle vaccine can be very important for an individual dog with significant exposure risk.

Early socialisation still matters. WSAVA supports appropriate socialisation while puppies complete their vaccine series.

Frequently asked questions

When should a puppy have their first vaccination?

The core puppy vaccination series commonly begins at approximately 6–8 weeks of age. WSAVA recommends starting vaccination against canine distemper, adenovirus and parvovirus during this period.

How many vaccinations does a puppy need?

There is no universal number. WSAVA recommends repeated core vaccination every 2–4 weeks from approximately 6–8 weeks until at least 16 weeks. The number of injections therefore depends partly on when the series begins.

Why can't my puppy just have one vaccine?

Maternal antibodies can interfere with vaccination during early puppyhood. Repeat doses increase the chance that vaccination occurs when maternal antibodies have declined enough for the puppy to mount an effective immune response.

What vaccines are essential for puppies?

WSAVA considers vaccination against canine distemper, adenovirus and parvovirus the main universal core viral vaccination. Rabies and leptospirosis recommendations depend on geography and risk, while regional guidelines may classify them differently.

Does my puppy need a rabies vaccine?

That depends on local law and rabies risk. In endemic areas, WSAVA recommends vaccination because rabies prevention protects both animals and people.

Does my puppy need leptospirosis vaccination?

It may be strongly recommended. AAHA currently considers leptospirosis a core canine vaccine in North America, while WSAVA recommends it as core in regions where leptospirosis is endemic and appropriate vaccines are available.

When is my puppy fully vaccinated?

There isn't one universally valid date. For the principal CDV/CAV/CPV series, WSAVA recommends continuing vaccination through at least 16 weeks and then either serological testing or an additional core dose at or shortly after 26 weeks. Protection and legal requirements for other vaccines follow different schedules.

Can my puppy socialise before completing every vaccination?

Potentially yes, with appropriate risk management. WSAVA strongly supports early socialisation and notes that controlled socialisation can occur while puppies are still completing their initial vaccine series. Ask your veterinarian how to balance local disease risk with behavioural development.

What if my puppy misses a vaccination?

Contact your veterinarian. The next step depends on the vaccine, age, interval and product. Do not automatically restart the series or wait until the next annual visit.

What if I don't know my puppy's vaccine history?

Provide your veterinarian with whatever reliable documentation exists. When vaccination status is uncertain, your veterinarian can determine an appropriate catch-up strategy. AAHA notes that vaccination generally offers greater benefit than leaving a dog with unknown immune status unprotected.

Do puppies need yearly vaccines forever?

Not every vaccine is given annually. For major core viral components, AAHA recommends boosters at three-year intervals after completion of the initial series and appropriate follow-up; other vaccines, including some bacterial and lifestyle vaccines, may require different intervals.

A puppy vaccination schedule is a pathway, not a calendar template

It is tempting to think of puppy vaccination as:

8 weeks → injection

12 weeks → injection

16 weeks → injection

finished.

The real biology is more complex.

The schedule exists because a puppy's immune protection is changing rapidly.

Maternal antibodies are fading.

The puppy's own immune system is developing.

Exposure risk is changing as the puppy begins exploring the world.

Lifestyle begins to determine which additional diseases matter.

And geography influences everything from leptospirosis to rabies.

So the goal is not to reproduce an internet vaccination chart perfectly.

The goal is to work with your veterinarian to build appropriate protection for your puppy, where they live and how they will live.

1KAHU

Keep the vaccination history. Remember what comes next.

1KAHU is designed to help guardians keep vaccination information connected to each pet's health profile.

A puppy's vaccination record can contain:

Vaccines Received

Dates

Veterinary Provider

Certificates

Next Recommended Review

Reminders

Rather than generating a universal medical schedule, the safest 1KAHU model is:

Veterinary recommendation → recorded vaccination → guardian reminder.

That allows technology to simplify care coordination without attempting to replace veterinary judgement.

One Guardian. For All Pets.

1KAHU is a technology platform and is not a provider of veterinary healthcare. This guide provides general educational information and does not prescribe a vaccination schedule for an individual puppy. Vaccine requirements vary by location, vaccine product, health, lifestyle and local law. Follow the vaccination plan provided by your veterinary professional.