Chaos Warhounds

Chaos Warhounds are a Chaos and Beastmen melee warbeast unit introduced in Total War: Warhammer. A well-placed kennel of Warhounds, set loose on the enemy lines, can thread injury and debilitating poison amongst the enemy.

Description
In Norsca, wolves and hounds prowl in the flickering shadows of the campfires made by the barbarian tribespeople of the frozen lands. The further north the tribe dwells, the more likely it is that the hounds that follow them will be mutants, their bodies swollen by the energies of Chaos. Brutish and bloodthirsty, the Warhounds of Chaos are natural killers built of muscle and fang that prowl the wilderness in ravening packs. They will even charge a spearwall with total abandon, their only concern the moment when their slobbering jaws sink into juicy, yielding flesh.

Strategy
The poison version has such an immense advantage over regular Chaos Warhounds, that there is no reason to bother with the base version.