Languages same as the base race.
Shapechanging usually takes a powerful wizard or druid to accomplish, but not for the skinwalkers. Every region has its tales about men who transform into beasts if the moon is right, but skinwalkers are not a part of this universal nightmare. While skinwalkers do share some genetics with such creatures, they have firm control on their bestial transformations and are able to retain their mental faculties in both physical states. But that doesn’t stop them from being driven out of town should they be discovered.