Copper is a dog who appears in all three Animal Crossing series games along with his working partner, Booker.
His name comes from the slang term "Copper" meaning policeman. In all
three games, Copper's dedication to professionalism and his work is in
sharp contrast with Booker's doddering incompetence. Copper also prides early risers and warns the player
to be careful when wandering around at night. Copper can not tell you
about the lost and found, but he can tell you and type in friend codes
with him. You can only visit other people's towns by using WiiConnect24 or Nintendo WFC. He and Booker are shown to wield wooden pikes which shows that Tortimer has quite possibly permitted them to use,if necessary, non-lethal force.