There is a werewolf path. The changes are mostly mental (belonging to the pack and its hierarchy) but you are forced to transform into a wolf during a full moon (or resist and suffer a penalty) and you get a combat bonus.
There are two ways to get it: either you lose to the wolves that attack you during one of the mage guild quests, or you go Solina's beach at night and get invited to a party where you can catch lycanthropy (better save before the talking to anyone on the beach, just to make sure you can reload if you miss your chance at the party).