Dog licensing is an annual event.  Dogs more than six months of age may be licensed any time after January 1st of a calendar year, but must be licensed no later than April 1st of the same year in order to avoid the additional fee assessment.  If a dog reaches 6 months of age after April 1st, the owner must apply for a license within 30 days; the fee is reduced by half after October 1st.  All dogs must have a current rabies vaccination in order to become licensed.