Det var i originalet
Som du sa är det en worrt .
Worrts are brown, chuba-like creatures with toothy mouths that made their home in the desert wastelands of Tatooine. They would use their long tongues to capture unsuspecting prey as it passed, mostly insects and rodents. Perhaps the most notable worrt in the galaxy lived on the road to Jabba’s Palace in the Dune Sea.
Det var i originalet, och det var inte CGI. Enligt Star Wars-databasen :
The worrt was a puppet, like many of the creatures seen at Jabba's palace in Return of the Jedi. Its production nickname is simply "road creature."
Här är en bild av worrt-dockan, från någon som verkar ha deltog i en prospekt.