The only terrier to have been bred in continental Europe, these terriers originated in Germany. While the larger Schnauzers are left in other categories, these dogs were ratters by nature and stayed in the terrier class.
These are a smart dog, which means they can be stubborn. They are fairly friendly by nature, with both humans and animals. They love to run and especially if they can chase something. They tend to be an active part of their family, especially with children. They tend to be very vocal, barking at strangers or while playing.