Core vaccines—strongly recommended for all pets—protect against diseases such as rabies, distemper, parvovirus, hepatitis in dogs, and panleukopenia, herpesvirus, calicivirus, and rabies in cats.
Non-core (optional) vaccines depend on your pet’s lifestyle, environment, and exposure risk—for example:
Dogs: kennel cough (Bordetella), Leptospirosis
Cats: feline leukemia (FeLV), FIV, etc.