The Chester County Treasurers Office is issuing a courtesy notice that dog wardens will canvass homes in Chester County the week of April 22nd to ensure all dog owners have current licenses and rabies vaccinations for their dogs.  All dogs three months or older must be licensed by January 1 of each year.  The fee is $6.50 for each spayed or neutered dog and $8.50 for other dogs. Seniors who are 65...