Shelob

Shelob was a great Spider and the greatest offspring of Ungoliant, the primordial spider. In the Third Age she lived in Mordor and was known to feed indiscriminately, preying on the inhabitants. She was encountered by Frodo Baggins and Samwise Gamgee in their quest to destroy the One Ring.
== History ==
=== Origin ===
Shelob's early history is completely unknown, save for the assumption that she was born in the Ered Gorgoroth and that she was the "last child" of Ungoliant. By the Second Age, she often feasted on her own children, and that at some point after fleeing from Beleriand, yet long before Sauron took the land of Mordor for himself she spun a dark lair in the Ephel Duath (Mountains of Shadow), near Cirith Ungol in the passes above Minas Morgul. For hundreds of years, she resided there making a labyrinth of webs within a network of caves to better trap her prey, which included all creatures great and small. She feasted primarily on those who wandered into her webs, though if a particularly juicy morsel was available, she would silently pursue and kill it.
=== Third Age ===
Sauron was aware of Shelob's presence in the mountains and allowed her to dwell there, for she made an excellent, if incidental, guard for the passage of Cirith Ungol. Sauron was known to be somewhat fond of her, and in a rare show of humor, was even known to refer to her as his cat. Sauron would sometimes give her food in the form of prisoners for which he had no more use, or servants who had displeased him. Reports of the massacre made by Shelob would be carried back to Barad-dur to further please the Dark Lord's humor. She would also sometimes eat Orcs that manned the tower of Cirith Ungol. However, as she was a more effective guard for the pass than they, Sauron never made any serious attempt to stop her (though Orcs would occasionally try to barricade her lair with stones).
At one point after being set free from Mordor, Gollum stumbled into her lair while attempting to escape the barren country. She caught him, but he survived the encounter by promising to bring her tastier meats than he. Orcs of Cirith Ungol had seen him on several occasions and believed that he was too thin and wiry for Shelob to bother eating.
Gollum would attempt later to fulfill this promise by leading Frodo and Sam into her lair and abandoning them. His hope was that once Shelob finished eating the two hobbits, she would throw away the Ring with the other parts of the hobbits that she could not eat, allowing Gollum to retrieve it. The two hobbits eventually happened upon a passageway that was too choked with Shelob's dark cobwebs to proceed, but as fortune would have it, Frodo's sword Sting, being of Elvish make, was able to slice through them. Using the Phial of Galadriel, they managed to at first fend her off. The light of Earendil's Star shone from the Phial, causing unbearable stabbing pain to Shelob's darkened senses, but she returned to attack Frodo poisoning him with her stinger in a surprise attack just as they reached the exit of the cave on the Mordor side. Her venom paralyzed Frodo, and she then wrapped him in her web.
Sam then assaulted the creature using Sting and the Phial of Galadrial in order to rescue his master. In a pitched battle, Sam managed to stab one of her eyes and injure her leg, but she held the upper hand. However, when she tried to use her stinger to inject Sam with venom, he dodged at the last moment and was able to stab her in the abdomen with Sting. This wounded her enough that Sam forced her to retreat using the Phial of Galadrial. None had ever wounded her so badly before.
It is not known if Shelob recovered from the battle, or if she succumbed to her wounds, as it was said her fate would remain unknown to the people of Middle-earth. She is last mentioned when Sam put on the One Ring, and heard Shelob "bubbling" in her misery far away, as his sense of hearing was vastly improved by wearing the Ring.
Shelob is known to Elves as "Ungwetári" and Lord Celeborn had hunted her down in the early years of the Third Age, to no avail. Shelob has a mental link to her children and after being stabbed by Samwise she summons all of her children to her side for nourishment and protection. Places formerly infested with spiders such as Mirkwood become empty as whole nests of them travel south to the call of their mother. Shelob herself is depicted as much larger than other giant spiders.