Author: Carol Campbell, DVM
Medical Director, Valley Humane Society
Vaccinations play an important role in keeping our pets healthy, but not every pet needs every vaccine. Understanding the difference between core vaccines and lifestyle (non-core) vaccines can help you make informed decisions.
What Are Core Vaccines?
Core vaccines are those considered essential for all pets, regardless of lifestyle, because they protect against serious and potentially life-threatening diseases.
Core Vaccines for Dogs
- DA2PP
- Protects against distemper, adenovirus (hepatitis), parvovirus, and parainfluenza
- Administered every 3–4 weeks until puppies are 4–5 months old
- Puppies are not fully protected until they receive their final vaccination at 4-5 months of age
- Rabies
- Given once your dog is 3 months old or older
Core Vaccines for Cats
- FVRCP
- Protects against feline viral rhinotracheitis, calicivirus, and panleukopenia
- Administered every 3–4 weeks until kittens are 4–5 months old
- Kittens are not fully protected until they receive their final vaccination at 4-5 months old
There is no statewide requirement for feline rabies vaccination, but regulations may vary by county or city. It’s important to discuss local requirements with your veterinarian. Rabies vaccination is recommended for any cat that goes outdoors.
What Are Lifestyle (Non-Core) Vaccines?
Lifestyle vaccines are recommended based on a pet’s individual risk of exposure, which depends on factors such as environment, activities, and contact with other animals.
Common lifestyle vaccines include:
- Canine Leptospirosis
- Canine Bordetella
- Feline FeLV (Feline Leukemia Virus)
These vaccines are not automatically necessary for every pet. Instead, they should be considered after discussing your pet’s daily routine and risk factors with your veterinarian.
How Lifestyle Affects Vaccine Recommendations
Your pet’s lifestyle matters. Here are some examples of when lifestyle vaccines may—or may not—be appropriate:
- Dogs who visit dog parks, groomers, or boarding facilities
Bordetella vaccination is recommended due to increased exposure to respiratory pathogens. - Dogs who hike frequently or have exposure to water sources
Leptospirosis vaccination is recommended because the bacteria can be found in standing water and wildlife urine. - Indoor-only cats with no exposure to other cats
FeLV is spread through close contact with other cats, primarily through saliva. Mutual grooming is the most common mode of transmission. The FeLV vaccination is generally not necessary if there is no risk of contact with other cats or all cats in a single household are negative for the virus.
If your veterinarian recommends vaccines beyond the core vaccines, it’s important to have an open discussion about what vaccines are needed to best fit your pet’s lifestyle.
Questions to Ask Your Veterinarian
Being an advocate for your pet means asking questions. Some helpful ones include:
- My pet rarely leaves my house/backyard. How important is it that she get this vaccine?
- Given my pet’s low risk of potential disease exposure, is this vaccination still recommended?
- My dog is rarely around other dogs—does he need this non-core vaccine?
- Does my pet’s age and vaccination history affect which vaccines are recommended?
There’s no one-size-fits-all answer, and an honest conversation can help ensure your pet is protected with the necessary vaccinations.
Balancing Benefits and Risks
Vaccination decisions should always involve weighing benefits versus risks. Your veterinarian can help guide these decisions to reduce disease risk while avoiding over-vaccination.
Some vaccines work similarly to human influenza vaccines—they may not completely prevent disease, but they can significantly reduce the severity and spread.
For example, a dog vaccinated against Bordetella may still develop canine infectious respiratory disease complex (kennel cough) after boarding, but the illness is often milder and self-limiting thanks to vaccination.
The Bottom Line
Vaccines are a powerful tool for protecting pet health, but the best vaccination plan is an individualized one. Core vaccines provide essential protection, while lifestyle vaccines should be tailored to your pet’s environment and activities. Partnering with your veterinarian and having open, thoughtful discussions will help you make the best decisions for your pet’s long-term health.