The Medfield Animal Shelter is holding an information session for new volunteers Thursday from 7 to 8 p.m. Participants will get a tour of the facility, meet current volunteers, and be served light refreshments. The shelter is on West Street, next to the waste-water treatment plant. The shelter is also accepting donations of cat and dog treats and food, cat litter, and cleaning supplies, among other items. For more information, visit www.medfieldshelter.com.