Veterinary advice

Pet vaccination: what you need to know

When to plan vaccines, why the schedule matters, what to bring to the clinic and which post-vaccination reactions can be normal.

2026-05-25 · 3

Dog and cat vaccination at a veterinary clinic

Why vaccination matters

Vaccination is one of the most important parts of preventive veterinary care. It helps protect the animal from dangerous infectious diseases and reduces the risk of disease spreading among other animals. Vaccines are especially important for pets that go outside, travel, visit groomers, training classes, shows or have contact with other animals.

Even if a pet lives indoors only, the risk is not always zero. Infections may be brought in indirectly through shoes, clothing or objects. The vaccination plan should therefore be based not only on whether the pet goes outside, but also on age, health, lifestyle and travel plans.

When to start

The vaccination schedule for young animals depends on age, previous vaccines, maternal immunity, health and living conditions. Puppies and kittens usually need a course of several vaccinations because protection develops gradually. One injection does not always mean that a young animal is already fully protected.

Adult pets need regular immunity support. If deadlines are missed, the veterinarian may recommend renewing or adjusting the plan. Travel, pet hotels, shows and documents often require valid records, so vaccines should not be left until the last moment.

Rabies vaccine and documents

Rabies vaccination is especially important because rabies is a severe and dangerous disease. This vaccine is also often required for practical reasons: travel, pet passports, registration or other situations where vaccination status must be confirmed.

If you plan to travel with your pet, prepare the documents in advance. A microchip, passport, valid rabies record and sometimes additional tests or waiting periods may be required. It is best to discuss this well before the trip, not the day before.

How to prepare

Bring the pet’s documents and vaccination record to the appointment. Before vaccination, the veterinarian should assess the animal’s general condition. Mention if the pet has recently been ill, taken medication, been lethargic, coughed, had diarrhoea, vomited, eaten poorly or had allergic reactions.

The animal should be clinically healthy. If you notice unusual behaviour, fever, digestive problems or marked weakness on the day of the appointment, call before coming. Sometimes it is safer to postpone vaccination until the condition is clear.

After vaccination

After vaccination, some animals are calmer, sleepier, less active or slightly sensitive at the injection site. Mild temporary tiredness often passes on its own. Still, it is wise to observe the pet and avoid heavy exercise, long travel or stressful events on the same day.

If severe swelling, breathing difficulty, repeated vomiting, marked weakness, widespread rash or other worrying signs appear, contact a veterinarian without delay. Vaccination is preventive care, but like any medical procedure it should be done responsibly and at the right time.

Why the schedule matters as much as the injection

A vaccine should be given at the right time because immunity is built and maintained according to a schedule. Missed dates may mean weaker protection, and travel documents may not be accepted if records are incomplete.

If you do not know when the pet was last vaccinated, bring all available documents. The veterinarian can decide whether the schedule should continue or restart.

Vaccination and travel

Travelling with a pet often requires a microchip, passport and valid rabies vaccination. Waiting periods may apply in some cases, so documents should not be left until the final week.

If you are planning to travel abroad, mention it when booking. The veterinarian can check not only vaccines but also travel-related documents.

FAQ

Can a sick animal be vaccinated?

Usually only clinically healthy animals are vaccinated. Vomiting, diarrhoea, coughing, fever or lethargy should be discussed with a veterinarian first.

When is a rabies vaccine needed?

Rabies vaccination is important for prevention and often required for travel, passports or registration. Validity should be checked in the documents.

Can a pet be tired after vaccination?

Mild temporary tiredness may be normal, but breathing difficulty, severe swelling, repeated vomiting or very poor condition requires urgent contact with the clinic.

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