Crynoid

Crynoids, or snow spiders, were arachnids native to the ice planet Neftali. Skilled at climbing and jumping, the tiny, three-centimeter-long species had ten segmented legs and was colored gray and white. Preferring to live among certain mosses found in the planet's caverns near thermal vents, they were known to crawl into an individual's bedroll, and during the reign of the Galactic Empire, a small number were located in Exovar's Emporium.

While the non-sentient crynoids mostly ate the mosses they lived among and were not generally aggressive, they would bite if harassed such that they felt threatened. This bite would inject a potent venom that could kill a humanoid within an hour. Those individuals that were lucky to survive or had a medpac handy would not escape or receive relief from the intense pain the venom would bestow for six hours, for there was no known remedy. The solitary creatures could only be seen in pairs when they had recently mated.

Text and facts from the “Crynoid” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.