Upon entering a little country store, a stranger noticed a sign on the door that read "DANGER! BEWARE OF DOG! " Inside he noticed a harmless old Dachshund 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," the manager replied. The stranger couldn't help but be amused. 

"That certainly doesn't look like a dangerous dog to me," he said. "Why in the world would you post that sign?" 

"Because," the manager replied, "before I posted that sign, people kept tripping over him."