Experience Collin County’s premier family-friendly Halloween event at Heard Natural Science Museum & Wildlife Sanctuary. Halloween at the Heard features a safe environment to experience the joy of trick-or-treating along the eerie Dinosaurs Live! Live-Size Animatronic Dinosaurs trail. Families will enjoy an evening full of fun activities including a presentation of a family-friendly movie on the Heard's outdoor amphitheater stage. This event has sold out early for several years.