FWIW...A Great Dane could not mate with a Chihuahua only because of the size difference. So any breed can mate with another breed that is close to the same size. A Standard Schnauzer can range in height from at 17 inches up for females. So it is not impossible for a Rott or Rott mix to breed to that size female. Your puppy is definitely Schnauzer mix. What does Hazuzu mean?