Being scratched by a two or three month old puppy’s teeth also carries the risk of needing a rabies vaccination to prevent rabies. Being scratched by a two or three month old puppy’s teeth is when shots are usually needed, and a three month old puppy cannot be ruled out as carrying the rabies virus simply because it is small. It is not certain that all of the animals a puppy comes into contact with are regularly vaccinated against rabies, and even a two- or three-month-old puppy cannot be 100% excluded from contracting the rabies virus. Although the probability of transmitting rabies to humans is very low at this time, rabies has an extremely high mortality rate once it develops, so five doses of rabies vaccine are recommended to prevent rabies when scratched by the teeth of a two- or three-month-old puppy, usually after exposure. Patients who have been scratched by the teeth of two or three-month-old puppies are advised to go to the hospital in a timely manner, to clarify the cause of the disease and then standardize the treatment according to the doctor’s instructions.