Some of these pictures and descriptions may give away plot details that you might not want to know before watching the film.
This South African comedy is a sequel to The Gods Must Be Crazy which has a couple of scenes with snakes. A lizard appears in the movie after a woman, a New York corporate lawyer and a man, a Zoologist, are flying in an ultralight aircraft that runs into a storm and crash lands in a tall tree. They rapel down to the ground where she is frightened by African wildlife including a rhinoceros, giraffes, lions, a hyena, and a large monitor lizard. The lizard scares her so much that she jumps onto the man's shoulders. We see the lizard walking away then she gets down. The lizard is an African monitor lizard which I think is a Nile Monitor.