It is highly recommended by vets that you vaccinate dogs, cats and certain pocket pets and some birds to help improve their health and lifespan. Discuss with your vet the vaccines that are recommended and the schedules.
Its common to vaccinate dogs against:
Parvovirus, Hepatitis, Distemper and Kennel Cough. Depending on where you live, the vet may also recommend Leptospirosis vaccines.
Common cat vaccinations are:
Herpesvirus, Feline Enteritis and Calicivirus. Cats that go outdoors or live in specific areas may also need to be vaccinated against Feline leukaemia virus, Chlamydia felis, Bordetella bronchiseptica and Feline immunodeficiency virus.