Lava flea

Lava fleas were a species of six-legged insect native to the volcanic planet Mustafar. They had eyes that distinguish between light and darkness as well as powerful legs for jumping. They were well adapted to life on the world's fiery surface due to their tough shock-resistant exoskeletons, and ate through the planet's crust, forming a variety of underground caves which the native sentient Mustafarian species would inhabit. Due to the unforgiving nature of Mustafar, the Mustafarians had to make the most of the hardy native creatures and tamed lava fleas to use as mounts. Visitors to the world from other species also used the fleas for transport.

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