ABOVE: Monica Lopez, of Hercules, is held up to one of the animatronic dinosaurs by her father, Erik Lopez, during the Jurassic Quest event at the Alameda County Fairgrounds in Pleasanton on Saturday. The two-day indoor exhibit features life-size, animatronic dinosaurs from the Triassic, Jurassic and Cretaceous periods. Visitors can interact with the dinosaurs and learn about them.

LEFT: Ken Kosich, of Alamo, and grandson Nicholas, 4, have their photo taken inside a dinosaur's mouth at the event, which ends today.