Webweavers were a large species of spiders indigenous to the planet Kashyyyk. They were capable of devouring humans. Wookiees hunted and ate the spiders.
Infant webweavers were larger than a human hand and lived in nests with numerous individuals.
During the liberation of Kashyyyk in 5 ABY, Han Solo, Chewbacca, and their allies released a swarm of webweaver spiders aboard the Imperial Star Destroyer Dominion. The spiders proceeded to kill Rear Admiral Urian Orlan and several stormtroopers. This allowed Han and his team to force their way aboard the ship's bridge.
- Collapse of the Republic