Veterinary clinics keep records for each of their patients, and fill out vaccination forms, both for their records and for the owner to keep. It is also possible to download these forms and have them stored electronically.
A record of vaccinations is necessary if the dog travels or stays in a pet day care. It also helps time the next dose of vaccinations that must be repeated.
In addition to records kept in paper form or on a computer, mobile applications help the owner keep her dog's medical records, including vaccination information, in her phone. For example, owners of the iPhone or iPad may use the application Dog Medical Agenda. For Android phone and tablet users, there's a similar application called Pet Master Pro.