from the fun 1981 movie Caveman, we get today's monster of the week. it's not a monster per se, but it's also not a dinosaur at all. it's the first critter we see in the movie, and it's a really impressive shot, as Atouk is looking for food, not realizing he's food to something else... the camera zooms out and we see the lizard looking at him, with a rather hungry look on it's face.
later on it takes a large part in the battle between the good tribe and the more, er, misguided tribe. again, there's some really great shots of it, very imaginative and well done. this lizard returns more than once, and becomes a good guy by the end of the movie.