Beginning Tuesday, Jan. 18, the Zoo will be closed on Mondays, Tuesdays and Wednesdays. On open days (Thursday - Sunday), the Zoo will close at 3 p.m. Select animal buildings remain closed. Entry passes are required for all guests, including infants. All visitors ages 2 and older are required to wear a mask in all indoor spaces at the Zoo, regardless of their vaccination status. Fully vaccinated visitors do not need to wear a mask in outdoor areas.