This is the second Star Wars movie. I don't care that they re-named all the films, it's still the second one to have been released in theaters.
After the Rebels are defeated, Luke Skywalker flies to Yoda's planet Dagobah to begin his Jedi training.
Luke Skywalker lands his space ship in a pond on the jungle planet. The ground there is covered with dry ice smoke and the trees are full of large snakes. (Burmese and other kinds of pythons.) Luke goes inside Yoda's little house where he finds a live California Kingsnake on the table. He tosses the snake aside and that's it for snakes in the movie.
The snakes, like the lizards we see, are just background curiosities used to make us think that Yoda lives in a weird place. They did not have that effect on me - seeing animals that come from different continents on Earth draped around on all the fake "jungle" plants of a distant planet only makes me think of how fake everything is. It would have been better for them to use invented animals, though I realize the movie was made before CGI was practical.