Knoxville Zoo invites guests to do a little grazing, try out some new watering holes and shake their tail feathers at Knoxville’s largest food and drink sampling event. Feast with the Beasts, presented by ORNL Federal Credit Union, takes place on Saturday from 7 to 11 p.m. at Knoxville Zoo. Celebrating its 20th year, Feast with the Beasts is an evening event that features everything from appetizers to desserts and a variety of refreshing drinks to sample.