Pet vaccines are medical preparations that help protect animals from various infectious diseases. They work by stimulating the pet's immune system to recognize and fight off specific pathogens, such as viruses and bacteria. Common vaccines for pets include those for canine parvovirus, distemper, and rabies. Vaccination schedules vary based on the pet's age, health, and lifestyle. Puppies and kittens typically receive a series of vaccinations during their first year, while adult pets may need booster shots to maintain immunity. Regular veterinary check-ups ensure that pets stay up-to-date on their vaccines, promoting their overall health and well-being.