The Rats by James HerbertRead about the other entries on the list.
Inspired while watching Tod Browning's Dracula, Herbert pulls no punches in this gruesome horror classic. The tale opens with a tramp being eaten alive; things don't get much more pleasant. Able to communicate telepathically, the rats of Herbert's imagining are truly frightening.
Also see John Mullan's list of ten of the best rats in literature.