Before the days when dogs were used to sniff out drugs at airports, many different animals were tried, including chickens, due to their superior sense of smell.
Things went awry, however, when the Sergeant in charge of the Poultry Unit was arrested for drug trafficking.
At his arraignment, the Press was scandalized when he pled guilty, but he remained indignant. "What did you expect?"
"I ran a fowl of the law!"