If you have ever squinted at a vet invoice wondering what the difference is between a C3 and a C5, or why the kitten needs a third needle, you are not alone. Australia uses its own shorthand for pet vaccines. Here is a plain-English guide to what each vaccine covers, the schedule Australian vets actually follow, and what you can expect to pay in 2026.
By Hannah Reid, GoPetr staff writer. General information only — it is not a substitute for advice from your own veterinarian, who will tailor a plan to your pet. Every medical claim below links to an Australian veterinary or welfare source.
C3, C5, F3, F4: what the letters mean
For dogs, the number tells you how many diseases the shot covers. A C3 is the core vaccine and protects against the three serious ones: canine distemper, canine adenovirus (hepatitis) and canine parvovirus (RSPCA Australia). A C5 is a C3 plus cover for the two main causes of kennel cough — Bordetella bronchiseptica and canine parainfluenza virus (Walkerville Vet). If your dog boards, goes to daycare or the dog park, most facilities require a C5. You can read more in our guide to kennel cough in Australia.
For cats, an F3 is the core vaccine, covering feline panleukopaenia (infectious enteritis) plus the two viruses behind cat flu — feline herpesvirus and calicivirus (Vet Voice). An F4 adds protection against Chlamydia felis. If your cat is prone to flu, our article on cat flu in winter is worth a read.
| Vaccine | Core or optional | What it protects against |
|---|---|---|
| C3 (dog) | Core | Distemper, adenovirus/hepatitis, parvovirus |
| C5 (dog) | Optional (lifestyle) | C3 plus kennel cough (Bordetella + parainfluenza) |
| F3 (cat) | Core | Panleukopaenia, herpesvirus, calicivirus (cat flu) |
| F4 (cat) | Optional (lifestyle) | F3 plus Chlamydia felis |
The Australian vaccination schedule
Puppies get a primary course starting at six to eight weeks, then boosters until they are at least 16 weeks old — usually three shots given a few weeks apart (Vet Voice). Until that course is finished, keep your pup away from parks and unknown dogs; the RSPCA advises waiting until your vet confirms the puppy is fully protected before heading to public places (RSPCA Australia). Our winter puppy socialisation guide covers safe ways to socialise in the meantime.
Kittens follow a similar pattern: the course starts at six to eight weeks and repeats every three to four weeks until the kitten is 16 to 20 weeks old (RSPCA Australia).
Adults need a booster 12 months after the initial course. After that, current Australian recommendations are for core vaccines to be given every three years where the product allows, rather than annually (Vet Voice). The Australian Veterinary Association supports these extended, triennial intervals for core vaccines in adult pets, though local disease risk can justify annual boosters — so the final call belongs to your vet (AVA). Non-core cover like kennel cough is still given yearly.
What it costs in Australia in 2026
Prices vary a lot between clinics and states, so treat these as a guide and confirm with your local vet before booking.
| Item | Typical cost (AUD) |
|---|---|
| Each puppy shot (3 in the course) | $160–$250 |
| Kitten primary course (initial) | $170–$200 |
| Adult annual booster | Around $150 |
| Low-cost community clinic (e.g. RSPCA events) | From about $69 |
Owners commonly report paying $160 to $250 for each of a puppy’s three initial shots, with adult boosters around $150 (Bow Wow Insurance). The RSPCA puts an initial kitten vaccination course at roughly $170 to $200 (RSPCA Australia). If cost is a barrier, ask your vet about payment options or look for subsidised RSPCA community vaccination days.
When to book the vet
- You have a new puppy or kitten and the primary course is not finished.
- You are booking boarding, daycare or a groomer — most require a current C5 for dogs.
- Your pet’s annual or triennial booster is due, or you have lost track of the date.
- You have adopted a pet with unknown vaccination history.
- Your pet seems unwell after a vaccine — mild tiredness for a day is common, but call the clinic if you see facial swelling, vomiting or breathing trouble.
Not sure who to see? You can find an accredited clinic through the Australian Veterinary Association’s Find a Vet directory.
Frequently asked questions
Do indoor cats really need vaccinating?
Most vets still recommend the core F3 for indoor cats, because viruses like panleukopaenia are hardy and can be carried in on shoes or clothing, and because boarding and cattery stays require it. Discuss your cat’s specific risk with your vet (AVA).
Is a three-yearly booster as safe as annual?
For core vaccines in healthy adult pets, yes — the AVA supports triennial intervals where the product’s duration of immunity allows, reserving annual boosters for higher-risk situations (AVA). Non-core vaccines such as kennel cough are still given yearly.
Can my puppy go to the park before the course is finished?
No. Wait until your vet confirms the primary course is complete and your puppy is fully protected before visiting parks or mixing with unknown dogs (RSPCA Australia).
Key takeaways
- C3/F3 are the core vaccines every dog and cat should have; C5/F4 add lifestyle cover.
- Puppies and kittens need a full primary course before they are protected — no parks until then.
- Adults get a 12-month booster, then core vaccines every three years in most cases.
- Budget roughly $160–$250 per puppy shot and about $150 for an adult booster, but always confirm with your clinic.
