Star Wars (1977) #31 and Star Wars: la Guerra de las Galaxias #7 (Ediciones Surco)

An image of a Stormtrooper riding a Dewback is one of the earliest publicity photos used to promote Star Wars.  A single Dewback prop was built for the film which is seen briefly in the background when the Imperials are searching for the droids in the Tatooine desert and when Luke Skywalker and Obi-Wan Kenobi enter the Mos Eisley Cantina.  A toy Dewback was produced for the Kenner action figure line in 1979 with slightly more mobility than the movie prop.  For many years, it was left to the imagine of Star Wars fans the particulars of this lizard-like mount.  It would not be until the 1997 Special Edition release of Star Wars that fans got to see the Dewback in action when digital versions are inserted into the two mentioned scenes.

This, at the time, mysterious creature makes an appearance on the cover and interior of Star Wars #31.

Star Wars #31a - Marvel Comics, U.S. (January 1980)

Spanish publisher Ediciones Surco's cover for Star Wars: la Guerra de las Galaxias #7 depicts the same scene.

Star Wars: la Guerra de las Galaxias #7a - Ediciones Surco, Spain (November 1983)
Star Wars #31 and 32

The first thing that is noticed when comparing the two covers is the Spanish version is flipped.  Most of the characters are in identical poses, including Luke, C-3PO, R2-D2, and the two Imperial Stormtroopers.  In the Spanish version, C-3PO is pointing at the Dewback.  Outside of the flipped image, the biggest difference between these covers is how menacing the Dewback is depicted on the Spanish cover.  On both covers, the Dewback is leering at our hiding heroes, but on the Spanish cover the Dewback has some impressive teeth and claws to go with the stare.

The Spanish cover is the better cover with a more detailed desert, reddish sky, and large sun that frames the menace our heroes face.  Inside the comic, our heroes are never close to the Imperials however; instead the patrol spots the landspeeder they are in with scanning equipment and dismisses it as a local farmer out hunting.