Here's the list of creatures represented in "Fell Beasts & Wondrous Magic". It is provided with the caveat that any errors are mine and the list is subject to change without notice.
Fell Beasts:
Balrogs (lesser, Typical and Greater)
Barrow-wights
Black Horses
Demons (Helegrog, Dindair, Bandśrhoth)
Dragons (Cold-drakes, Fire-drakes, Winged-drakes)
Ghosts
Hell-Hawks (that what I [Greg] am assuming, as the word was edited by the filter)
Huorns (True and Huorn Ents)
Kraken
Sea Kraken
Nazgūl (Witch-King, Black Nśmenórean Nazgūl, Lesser Nazgūl)
Oliphaunts
Orcs (Standard, Forest, Mountain, Uruks, Half-Orcs)
Spiders (Small Giant, Large Giant, Shelobs Spawn)
Trolls (Snow, Hill, Cave, Ettens, Olog-Hai)
Vampires
Wargs
Werewolves
Beasts of the Land:
Badgers
Bears (Black, Brown)
Bee (Swarm)
Birds (Birds of Prey, Carrion, Songbirds)
Boars
Cats
Deer
Dogs
Dolphins
Donkeys
Elk
Foxes
Horses (Pony, Riding, Warhorse, Mearas, Elven Steeds)
Mules
Oxen
Scorpions
Sharks
Snakes (Constrictors, Vipers)
Spiders
Squirrels
Turtles
Wolverines
Wolves
Doug Burke
Net Rep