The student chapter, HATS of CMU, is holding a Spay Day event 10 a.m. to 2 p.m., February 28 in the hallway of Park Library on CMU campus on Preston Street. A table will have brochures; people can fill questionnaires on animal overpopulation and animal care to win a cash prize or tee-shirts. Spay Day wristbands will be on sale.