The Affenpinscher, also known as the Monkey Terrier, is a terrier-like toy Pinscher breed of dog. The breed is German in origin and dates back to the seventeenth century. The name is derived from the German 'Affe' (ape, monkey). The breed predates and is ancestral to the 'Griffon Bruxellois' (Brussels Griffon) and Miniature Schnauzer.

An Affenpinscher generally weighs 6.5 to 13.2 pounds (2.9 to 6.0 kg) and stands 9 to 12 inches (23 to 30 cm) tall at the withers. It has a harsh rough coat when it is not clippered and if clippered it can be softer and fluffier.

Affenpinschers have a distinct appearance that some associate with terriers. They are active, adventurous, curious, and stubborn, but they are also fun-loving and playful.

The breed is confident, lively, affectionate towards family members and is also very protective of them. This loyal little dog enjoys being with its family. It needs consistent, firm training since some can be quite difficult to housebreak. This type of dog easily becomes bored, so training should be varied. The affenpinscher has a terrier-like personality.

Affenpinschers are somewhat territorial when it comes to their toys and food, so they are not recommended for homes with very small children. This dog is mostly quiet, but can become very excited if attacked or threatened, and shows no fear toward any aggressor.

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