The sleft-chuff were large airborne herbivores native to Taloraan. They inhabited the upper atmosphere of the planet, filling their hollow bodies with gas to keep them afloat. They grazed on clouds of single-celled plant organisms that they collected with their tentacles which were covered with feathery hairs.

Female sleft-chuffni usually gathered in herds of around a dozen, while males were solitary. The creatures were generally gentle and placid, but were known to become jittery during thunderstorms.

The sleft-chuff were domesticated by the Denfrandi, who used them as both transports and as mobile homes, attaching gondolas to the creatures' undersides. Since the average sleft-chuff could carry up to fifty tons of dead weight, the Denfrandi and their homes did not present a burden to the creatures.