Inspector Lee was the finest detective in the city. Whenever the police were baffled, they called in Lee and his Foo dog to find out the identity of the criminal.
One day, the police were again baffled by a bank robber who had slipped into a crowd of people.
They called in Lee and asked him to pinpoint which of the men was the robber.
Lee’s dog went up to each of them in turn, then finally stopped in front of one and started pooping.
“Arrest that man, captain!” Lee cried out.
The robber, instantly losing his cool, confessed and was taken away.
“Amazing, Lee!” said the captain. “But how did you know?”
Lee shrugged. “Well, if the Foo shits…”