Every fantasy setting has an obligatory Monster Manual, Creature Guide, Catalogue or similar, so it is no surprise that Warhammer Fantasy needs one. Given the decades of development that has seen the miniatures range expand for GW, there is certainly no end of creatures to select - but the authors have assembled a discerning list. All the major races are covered, and ancillary beasts are listed with their 'parent' races (ie you'll find Squigs under the entry for Greenskins).
The descriptions of the creatures are quite well-done, and engaging even for a veteran of the wargame. The value-add however, lies in the Story Seeds. For many (but alas, not all) of the monsters a selection of Story Seeds are provided, to kickstart your imagination or give examples of how and where they might be encountered. My only negative comment here is that there doesn't seem to be a pattern to which races/monsters have these seeds and which don't. There were a few omissions which I felt odd - but this is a matter of personal taste.
I'd highly recommend this to WHFRPG players, but also recommend it to anyone looking to spice up their fantasy game.
[4 of 5 Stars!]