Atlantic County Library System/Brigantine hosts Costume Dog Days in October and December. Everyone is invited to bring their dogs to the library for a photo and a treat. Dogs must be well behaved and on leashes. On Saturday, October 20 from 1 pm until 3 pm, dogs in Halloween costumes are invited to attend. On Saturday, December 15 from 1 pm until 3 pm, dogs in their winter finery are invited to attend.