At one year old, your dog is due for booster shots of the core vaccines given during puppyhood, plus a rabies booster. This visit is one of the most important in your dog’s vaccination timeline because it locks in the long-term immunity that puppy shots started building. Your vet will also evaluate whether your dog’s lifestyle calls for any additional vaccines beyond the core set.
Core Vaccines Due at One Year
The essential vaccine at this visit is the DHPP (sometimes called DAPP), which protects against distemper, adenovirus, parvovirus, and parainfluenza. Your dog received a series of these shots as a puppy, typically every two to four weeks until around 16 to 18 weeks of age. The one-year booster is required to complete that series and establish strong, lasting immunity. After this booster, your dog won’t need another DHPP for three years.
Rabies is the other core vaccine. Most dogs get their first rabies shot between 12 and 16 weeks old, and the first booster is due one year after that initial dose. Rabies vaccination is required by law in every U.S. state, though the specific rules vary. Some states allow a three-year rabies vaccine after the first annual booster, while a few states (California for dogs, Mississippi, and Vermont) require the next dose one year later regardless of which product is used. If your dog is even one day past the due date, it’s considered overdue, so keeping track of the exact timing matters for legal compliance.
Non-Core Vaccines Based on Lifestyle
Beyond the core shots, your vet will consider your dog’s daily life to decide what else is needed. These non-core vaccines aren’t optional in the sense that they’re unimportant. They’re just tailored to specific risks rather than given to every dog.
- Bordetella (kennel cough): Recommended if your dog goes to boarding facilities, daycare, dog parks, or grooming salons. Many boarding and daycare facilities require it. Dogs with high social exposure may benefit from getting it more frequently than once a year, such as before each boarding stay.
- Leptospirosis: Protects against a bacterial infection spread through contaminated water and wildlife urine. Dogs that swim in ponds, hike, or spend time in areas with raccoons, rodents, or other wildlife are at higher risk. This vaccine requires annual boosters.
- Lyme disease: Important in areas where deer ticks are common, particularly the Northeast, upper Midwest, and parts of the Pacific coast. In regions where Lyme disease is widespread, many vets treat this as essentially a core vaccine. It also requires annual boosters.
- Canine influenza: Not routinely recommended for all dogs. Outbreaks tend to happen in clusters rather than circulate constantly, so this vaccine makes the most sense for dogs that are frequently boarded, attend dog shows, or travel to areas with active outbreaks.
If your dog’s lifestyle has changed since puppyhood (maybe you’ve started hiking together, or your dog now goes to daycare), mention that to your vet so the vaccine plan can be updated.
What the Visit Costs
A one-year wellness exam typically runs $30 to $50 on its own. Individual vaccine doses add up from there: DHPP costs roughly $20 to $60, rabies runs $20 to $30, bordetella is $30 to $50, and canine influenza is $45 to $65. Leptospirosis and Lyme vaccines each fall in the $20 to $40 range per dose. A dog getting just the core vaccines might pay around $100 total including the exam, while a dog needing the full suite of non-core vaccines could be looking at $200 or more. Prices vary by region and clinic.
Normal Side Effects vs. Warning Signs
Most dogs go home and act completely normal after their one-year vaccines. Some dogs, though, will be a bit sluggish for a day or two. Mild soreness at the injection site, a slight fever, reduced appetite, and reluctance to play are all within the normal range. Dogs that receive an intranasal bordetella vaccine may sneeze for a short time afterward. These symptoms typically resolve on their own within a couple of days and don’t require any changes to future vaccination plans.
Serious reactions are rare but worth knowing about. Facial swelling, hives, vomiting, diarrhea, difficulty breathing, or collapse within hours of the vaccine are signs of an allergic reaction that needs immediate veterinary attention. If your dog vomits shortly after getting vaccinated, contact your vet right away, as it can signal the beginning of a more serious reaction or could be something as simple as car sickness on the ride home. Dogs that experience a true allergic reaction will need a modified vaccination approach going forward.
Titer Testing as an Alternative
If you’d rather not vaccinate on a fixed schedule after the one-year boosters, titer testing is an option worth discussing with your vet. A titer test is a blood draw that measures your dog’s existing antibody levels against specific diseases, most commonly distemper and parvovirus. If the antibody levels are still protective, revaccination isn’t necessary.
This approach is most useful for adult dogs who have already completed their puppy series and one-year boosters. Checking titers every two to four years can identify dogs that maintain strong immunity for years (sometimes for life) as well as the rare “non-responder” dogs that never develop adequate protection despite vaccination. A dog that tests negative for antibodies should be revaccinated and then retested to confirm it responded. Titer testing doesn’t replace the one-year booster visit, though. That first annual booster is critical for cementing long-term protection and shouldn’t be skipped.
Titer tests are not available as a legal substitute for rabies vaccination in most states, so your dog will still need rabies boosters on the schedule your state requires regardless of antibody levels.
After the One-Year Visit
Once your dog has completed the one-year boosters, the core vaccination schedule slows down considerably. DHPP moves to every three years, and rabies follows a three-year cycle in most states after the initial one-year booster. Non-core vaccines like bordetella, leptospirosis, and Lyme disease continue on an annual schedule for as long as the risk factors remain. Your vet should reassess your dog’s lifestyle and geographic risks at each annual wellness visit to make sure the vaccine plan still fits.