police dog

dog trained to track or attack suspected criminals 警犬.

Polaris, polarity, polarization, polarisation, polarize, polarize, polarise, Polaroid, Polaroid camera, Pole, pole-axe, pole-star, pole-vault, pole-vaulter, pole-vaulting, polecat, polemic, polemical, polemically, polemicist, police, police constable (abbr 缩写 PC), police force, police state, police station, police-officer (also officer), policeman, policewoman, policy, polio, Polish, polished, polisher, politburo, polite, politely, politeness, politic, political, political asylum, political geography, political prisoner,