He knows if you’ve been bad or good.

A police dog nabbed suspects in three separate incidents during a recent shift, delivering some wanted gifts to his colleagues in the Washington County Sheriff’s Office.

Embracing the holiday spirit, K-9 Stark hit the streets Thursday night and Friday morning clad in a red and white Santa Claus outfit.

“He wore it all night long,” said his partner Cpl. Micah Akin. “He loves Christmas.”

The costumed crusader — a half German Shepherd, half Belgian Malinois mix — kicked off the trio of busts by sniffing out a domestic violence suspect hiding under a pile of clothes in the bedroom of a home in the 16000 block of Southwest Hillary Place in Aloha, the sheriff’s office said.

Authorities booked a shirtless Michael Johnson, 39, on a host of charges, including robbery, strangulation and domestic assault.

Michael Johnson (left), Trevor Bates and Briawnna Raby.

A few hours later, the four-legged crimefighter was on the hunt for a man accused of smashing out a car window near Southwest Hall Boulevard and Hemlock Street in Metzger, according to authorities.

Around midnight he located Trevor Bates, 25, cowering inside a different car, said Deputy Jeff Talbot. Bates was jailed on counts of criminal mischief, felon in possession of a firearm and other suspected charges.

K-9 Stark finished a long night by tracking down a woman who bolted on foot from the 4200 block of Southwest Kennedy Street in Beaverton during a welfare check around 1:45 a.m., the sheriff’s office said.

The woman, 22-year-old Briawnna Raby of Portland, had an outstanding warrant and was also booked in the Washington County Jail, authorities said.

The three captures bring K-9 Stark’s career busts to 186, an office record, Talbot said.

His sartorial flare is also one for the books. In the past, the 7-year-old pooch has donned Halloween costumes, sported ugly holiday sweaters and carried bouquets of red roses on Valentine’s Day while on the beat.

-- Shane Dixon Kavanaugh; 503-294-7632