Animal vaccines are biological preparations that help protect animals from infectious diseases. They work by stimulating the animal's immune system to recognize and fight off specific pathogens, such as viruses and bacteria. Vaccines can be administered to pets, livestock, and wildlife, ensuring their health and preventing the spread of diseases. There are different types of animal vaccines, including live attenuated, inactivated, and subunit vaccines. Each type has its own method of action and effectiveness. Vaccination programs are essential for maintaining animal health and can also contribute to public health by reducing the risk of zoonotic diseases, which can be transmitted from animals to humans.