Great Spiders

Great Spiders are a race of huge, oversized spiders that appear in the Middle-earth legendarium. They appeared in The Silmarillion, The Hobbit, and The Lord of the Rings, all by J.R.R. Tolkien. The film adaptations they have appeared in are The Hobbit: An Unexpected Journey, The Desolation of Smaug, and The Lord of the Rings: The Return of the King, which were made by Peter Jackson. They seem to despise light, so therefore, they live in dark and perilous places where light can't get in.

Abilities
The Great Spiders are able to speak to one another, which Bilbo Baggins heard when he put the One Ring on. They are able to spin giant webs, which Frodo got stuck in when he was being attacked by Shelob. They are even able to devour light, which Ungoliant did with Melkor when they destroyed the Two Trees. Ungoliant was even able to grow twice her normal size when she devoured the light from the Two Trees.