An Oath of Dogs — Wendy N. Wagner

Kate Standish has been on the forest-world of Huginn less than a week, and she's already pretty sure her new company murdered her boss. But the little town of mill workers and farmers is more worried about ecoterrorism and a series of attacks by the bizarre, sentient dogs of this planet than a death most people would like to believe is an accident. That is, until Kate's investigation uncovers a conspiracy which threatens them all.