K-9 is a buddy-buddy cop comedy with a difference: one of the partners is a dog. That's the premise for this light and likeable late '80s film which trades on the success of the likes of LETHAL WEAPON although it's aimed at a younger audience. It gets by on the charisma of the underrated James Belushi, who has a strong enough presence to carry a movie and who does well acting against a German Shepherd. Inevitably the well-trained pooch steals all of his scenes, the highlight being the encounter in the bar with an imposing Pruitt Taylor Vince. The rest is a usual mix of romantic staples, familiar bad guy antics, and action scenes.