In German, "affen" means ape or monkey, and "pinscher" means terrier. That's why the Affenpinscher is also known as the Monkey Dog or Monkey Terrier. It is commonly noted to have a "monkey-like" expression.
This appealing little dog is descended from numerous small terriers that hunted rats and mice throughout Europe in the 17th and 18th centuries.
The Affenpinscher is ancestral to the Brussels Griffon and Miniature Schnauzer.