Coltons of Grave Gulch Series by Justine Davis

Man's best friend …is this cop's most trusted partnerNew to the Grave Gulch Police Department, K-9 detective Brett Shea feels like an outsider among its many Coltons. Even Annalise, his dog's trainer, is a Colton! But when she's attacked by a man pretending to be her date, Brett vows to track down the criminal. Though he's sworn off forever love—which is proving harder by the day—Brett will protect her at any cost.