This is Hunting Ground, the second book in Patricia' Briggs Alpha and Omega series to be released in July from Ace.
I couldn't find a synopsis but from Patricia's website, Hunting Ground takes place in Seattle, WA and has more werewolf fun then you can shake a tail at.
I really think the cover fits the tone of this series. Since I really enjoyed Cry Wolf, I will definitely be reading the sequel about Anna and Charles.
How about you?