What vaccinations must be administered to a dog over three months old?

The comprehensive vaccination list provided in the correct option is essential for protecting a dog over three months old from serious and potentially fatal diseases. Dogs at this age are at a higher risk for various infectious diseases, so a broad vaccination strategy is crucial.

The core vaccines in this list, such as Distemper, Parvovirus, and Rabies, are generally required for all dogs due to the severity and prevalence of these diseases. Distemper, for instance, is a highly contagious viral illness that affects multiple systems in the body, while Parvovirus can cause severe gastrointestinal disease. Rabies vaccination is not only vital for the dog's health but also a legal requirement in many locations due to public health concerns.

Additionally, other vaccines in the list, like Leptospirosis (Lepto), Bordetella, Parainfluenza, and Hepatitis, protect against diseases that can arise from various exposures, such as kennel environments or urban areas with a high population of wildlife.

The extensive nature of this vaccination schedule ensures that the dog receives protection from multiple pathogens, which aligns with veterinary best practices and recommendations by organizations such as the American Animal Hospital Association. By following this vaccination protocol, veterinarians can help prevent outbreaks of contagious diseases and promote overall pet health