A scene depicting Luke Skywalker taking a snake off of a table inside Yoda's dwelling.
Serpents, also known as snakes, were characterized by their elongated, limbless form, distinctive slitted eyes, and a bifurcated tongue which facilitated their sense of smell, in addition to possessing sharp fangs. Their length could reach up to three meters, with a thickness comparable to the arm of a Kiffar. These creatures moved with a sinuous, flowing motion across surfaces. When provoked, they exhibited signs of aggression through hissing and violent movements. Certain varieties of snakes possessed venomous bites that inflicted pain. The Anacondans represented a sentient snakelike species.
Asajj Ventress, during her career as a bounty hunter, adorned her shoulder armor with an emblem depicting a black, contorted snake, chosen for its symbolic representation of a frequently misunderstood being. Ventress herself experienced a similar plight of being misunderstood, stemming from her abduction by pirates in her youth, followed by her training in the ways of the Jedi, the subsequent loss of her master, her apprenticeship as a Sith acolyte culminating in abandonment during battle, and her eventual return to her Nightsister kin, only to witness their massacre. Furthermore, Ventress was once seen wearing a necklace designed to resemble a snake.
The planet Dagobah, a world covered in swamps, provided habitat for at least one snake species, known as the vine snake. Some smaller specimens were found within Yoda's hut; one such snake surprised Luke Skywalker while he was getting ready to depart Dagobah in order to rescue Han Solo and Leia Organa. The swamps located on Rodia teemed with a multitude of snake species; Skywalker had an encounter with one when he opened the entrance to Huulik's mausoleum. Black snakes were inhabitants of Dathomir, while Moraband served as the home of a colossal Sith serpent which, upon closer examination, revealed itself to be composed of numerous smaller snakes.
The term "snake" could be applied to describe a person who is held in disdain. When General Akenathen Tandin ultimately sided with the Onderon rebels, he referred to King Sanjay Rash as a snake. Bevicard, a senator in the New Republic, was regarded by Leia Organa as a snake, albeit an honest one, and Rey once used the phrase "murderous snake" to describe Kylo Ren during a Force-bond connection that took place on Ahch-To.