What were miniature pin bred for?

The Miniature Pinscher is a German breed. The Miniature Pinscher was developed from the Dachshund, Italian Greyhound, and the short haired German Pinscher. The breed looks like a mini Doberman, most likely because both the Miniature Pinscher and the the Doberman both were developed from the German Pinscher. The breed was used as a barnyard ratter controlling the rodent population in the stables. The Miniature Pinscher is often called the "King Of The Toys."Some of the Miniature Pinscher's talents are competitive obedience, watchdog, and agility.