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. Full story for BostonGlobe.com subscribers.