The lesser sluagh is a foul-smelling, foul-tempered, foul-looking beast that makes a mother-in-law seem positively angelic. Seven feet tall, musclebound, and wearing some kind of ragged, odiferous hide over its own none too lovely grey skin, it stares with bloodshot eyes and an evil leer. It is a living creature rather than an undead one, though you can't imagine it being any uglier or meaner were it undead.
Kind of makes you wonder about the greater ones, doesn't it?