Another dog-licensing event will be taking place on Saturday at Tractor Supply from 11 a.m. to 1 p.m. A vet also will be there so owners can get their pet vaccinated and licensed all in one stop. This is the last licensing clinic that will be hosted on a Saturday. Warren County Treasurer Lisa Marie Barr is reminding the public that dogs over eight weeks old in Pennsylvania must be licensed.License fees are $10.80 per year and $8.80 for seniors or disabled individuals. Fines for unlicensed dogs can range from $100 to $500. In order to purchase a lifetime license, the dog must ...