The Affenpinscher, also known as the Monkey Terrier, is a small-sized terrier-like toy Pinscher breed of dog that originated in Germany. Originally developed as a mouser, the Affenpinscher's distinctive appearance and charming personality has gained popularity as a companion among dog lovers worldwide.The American Kennel Club (AKC) describes the Affenpinscher as loyal, curious, and famously amusing. The breeds personality is described as almost-human, and a fearless comedian.