@Theroc: A 2hd wolf won't be useful as a meatshield, and any other animal even less (apart from maybe a horse, but they don't really have the instincts needed for a warrior unless ridden). It'll have 5 defense and 4 soak, and pitted against enemies for your level 6 character, he'll be hash in no time. And due to the lack of Speak With Animals that regular druids and rangers have, the usefulness of the animal as a scout will be very limited. As a guard, tracker, or hunting animal it could be useful though.
Wouldn't the wolf not have HD, as the system is established with the HP bar? or does that only apply to players? Also, always a chance for a lucky blow, and it'd at least spare me getting hit once. But mostly it'd be flavor, I guess.