All three variations of the Schnauzer were developed in Wurttemburg and Bavaria in Germany. The original size of the Schnauzer was the Standard Schnauzer which dates back as far as the 15th century. It was from the Standard Schnauzer that all of the other variations were created. It is believed that the original Schnauzer was created by crossing the German Pudel, the German variation of the Poodle, with the Wirehaired Pinscher and the German Wolfspitz.
Schnauzers were originally part of the Terrier Group from 1899 to 1945 because of the similarities between the two. The Schnauzer was transferred to the Working Group after it was discovered that the Schnauzer had originally served as cattle tenders and guard dogs.
The Miniature Schnauzer was developed by crossing the Affenpincher with the smallest of the Standard Schnauzers. The first Miniature Schnauzer dates back to the late 19 century. The Miniature Schnauzer was first recognized as its own breed in Germany in 1899. The first Miniature Schnauzer came to America in 1925.