Rabies is the most notorious viral disease of pets, and it can infect the central nervous system of all mammals, including humans. It is almost universally fatal if not treated before symptoms begin. Due to the high risk of humans getting rabies, Texas state law requires that all dogs and cats be vaccinated for rabies. According to the law, all dogs must receive a rabies vaccine between 12 and 16 weeks of age. All dogs must receive a booster at 1 year of age, and then depending on their vaccination history and the vaccine used, may receive either a 3-year or 1-year booster vaccine for life. Some jurisdictions only allow a 1 year vaccine to be administered, and require annual boosters. It is very important to always have access to your pet’s rabies vaccination history.