Nonhuman characters were portrayed by actors in latex rubber suits or heavy creature makeup. Dinosaurs in the series were created using a combination of stop motion animation miniatures, rear-projection film effects, and occasional hand puppets for close-ups of dinosaur heads. Wesley Eure points out on a commentary track for "Land of the Lost"'s first-season DVD that the Grumpy hand puppet has no hole in the back of its throat, though it is often seen opening its mouth wide to roar. The series marked a rare example of matting filmed stop-motion sequences with videotape live action, so as to avoid the telltale blue 'fringe' produced in matting with less exacting processes. Though this occasionally worked very well, the difference in lighting between the video and film sequences sometimes brought inadvertent attention to the limitations of the process.