Texas law requires only one vaccine for dogs: rabies. But veterinarians across the state recommend several additional core and non-core vaccines depending on your dog’s age, lifestyle, and where in Texas you live. Here’s what you need to know to keep your dog protected and legal.
Rabies: The Only Legally Required Vaccine
Under the Texas Rabies Control Act (Health and Safety Code, Chapter 826), every dog must be vaccinated against rabies by 16 weeks of age. The vaccine must be given by or under the direct supervision of a licensed veterinarian using a USDA-approved product. No exceptions exist for size, breed, or whether your dog stays indoors.
After the first rabies shot, your dog isn’t considered fully protected until 30 days have passed. From there, boosters follow the schedule on the vaccine label. Most veterinarians use a one-year vaccine for the initial dose, then switch to a three-year product for subsequent boosters. Texas recognizes the three-year vaccine as long as the interval doesn’t exceed the manufacturer’s labeled duration of immunity. However, some cities and counties impose their own rules that may require more frequent vaccination, so it’s worth checking your local ordinance.
If your dog falls behind on a booster, one revaccination brings them back into “currently vaccinated” status. Your vet will then set the next booster date based on the labeled duration of the new vaccine.
Core Vaccines Every Texas Dog Should Get
Beyond rabies, three vaccines are considered core for all dogs in North America regardless of location or lifestyle: canine distemper, canine adenovirus-2, and canine parvovirus. These protect against diseases that are widespread, highly contagious, and often fatal, especially in puppies.
You’ll typically see these bundled into a single combination shot your vet may call DHPP, DAPP, or DA2PP. Puppies usually receive a series of doses starting around 6 to 8 weeks of age, with boosters every 3 to 4 weeks until they’re about 16 weeks old. Adult dogs then get a booster one year later and every three years after that. Parvovirus is particularly aggressive in Texas’s warm climate, where the virus can survive in soil for months, making this series non-negotiable for puppies.
Non-Core Vaccines Based on Lifestyle
Non-core vaccines are recommended selectively based on your dog’s exposure risk. In Texas, several of these deserve serious consideration.
Leptospirosis
This bacterial infection spreads through contaminated water and the urine of wildlife like raccoons, rats, and opossums. It can cause kidney and liver failure in dogs and can also spread to humans. Texas has one of the highest rates of canine leptospirosis in the country, with roughly 10% of tested dogs showing positive results, the highest prevalence of any state in one national survey. Warm temperatures and heavy rainfall both increase risk, which means much of Texas, particularly the central and eastern regions with more precipitation, poses a real threat. If your dog drinks from puddles, swims in ponds or creeks, or spends time in areas with wildlife, this vaccine is strongly worth discussing with your vet. It requires an initial two-dose series followed by annual boosters.
Bordetella (Kennel Cough)
Bordetella causes a harsh, hacking cough that spreads rapidly wherever dogs gather in close quarters. If your dog goes to boarding facilities, daycare, dog parks, or grooming salons, most of these businesses will require proof of a bordetella vaccine before entry. It’s available as an injection, nasal spray, or oral liquid and is typically given annually, though some high-exposure dogs get it every six months.
Canine Influenza
Dog flu has caused outbreaks in multiple Texas cities over the past several years. Two strains circulate (H3N2 and H3N8), and the vaccine covers both. Like bordetella, it’s most relevant for dogs that regularly interact with other dogs. Some boarding and daycare facilities now require it alongside bordetella.
Lyme Disease
Lyme disease is transmitted by black-legged ticks and is far more common in the northeastern United States. Most Texas veterinarians don’t routinely recommend this vaccine unless your dog travels to high-risk regions. If you and your dog regularly visit the upper Midwest or Northeast, ask your vet whether it makes sense.
The Rattlesnake Vaccine
Texas is home to multiple rattlesnake species, and a vaccine targeting western diamondback venom has been available nationally since 2004. The manufacturer also claims some cross-protection against timber rattlesnakes, copperheads, and several other species, though it does not cover cottonmouth, Mojave, or coral snake venom.
The vaccine requires an initial dose followed by a booster one month later, then annual boosters timed about a month before rattlesnake season begins, typically mid to late winter in Texas. Dogs under 25 pounds may benefit from additional boosters because smaller dogs are more sensitive to venom, while dogs over 100 pounds may need extra doses to mount a strong enough immune response.
One important caveat: even vaccinated dogs need emergency veterinary care after a rattlesnake bite. The vaccine may reduce the severity of swelling and tissue damage and could lessen the need for antivenom treatment, but it is not a substitute for immediate medical attention. If your dog spends time hiking, hunting, or roaming rural property in West Texas, the Hill Country, or South Texas brush country, this vaccine is worth considering.
A Typical Vaccination Timeline
- 6 to 8 weeks: First combination vaccine (distemper, adenovirus, parvovirus)
- 10 to 12 weeks: Second combination vaccine, first leptospirosis dose if recommended, bordetella
- 14 to 16 weeks: Third combination vaccine, second leptospirosis dose, first rabies vaccine (required by law at 16 weeks)
- 1 year: Boosters for combination vaccine, rabies, leptospirosis, bordetella, and any other non-core vaccines
- Every 1 to 3 years after that: Core vaccines every three years, rabies per label and local ordinance, leptospirosis and bordetella annually
Your vet may adjust this timeline slightly depending on your puppy’s health or breed size, but this is the general framework most Texas veterinary clinics follow.
Finding Affordable Vaccinations in Texas
If cost is a concern, several options exist across the state. The Texas Coalition for Animal Protection (TCAP) operates clinics in the Dallas-Fort Worth area offering low-cost vaccines. Many Texas cities run periodic free or reduced-cost vaccination events, particularly for rabies, often through animal services or code compliance departments. Feed stores and pet supply chains also frequently host mobile vaccination clinics with significantly lower prices than a full vet visit. These clinics are a practical option for routine shots, though they’re not a replacement for a full veterinary exam, especially for puppies who need a broader health assessment alongside their vaccine series.