Upon entering the little country store, the
stranger
noticed a sign saying; DANGER! BEWARE OF DOG!
posted on the glass door. Inside he noticed a
harmless old hound dog asleep on the floor besides
the cash register.
He asked the store manager, "Is THAT the dog folks
are supposed to beware of?"
"Yep, that's him," he replied.
The stranger couldn't help but be amused. "That
certainly doesn't look like a dangerous dog to me.
Why in the world would you post that sign?"
"Because," the owner replied, "before I posted that
sign, people kept tripping over him."