Affenpinschers are intelligent, friendly, loyal, alert, spunky and lively. They are highly defensive of their food, toys, and territory. The Affenpinscher will take the reins to defend its loved ones when necessary, though due to its small size it is not recommended as a guard or watch dog. The spunky, fearless Affenpinscher makes a great companion.The Affenpinscher has a personality similar to most terriers (though it is categorized under the pinscher-schnauzer subgroup). The Affenpinscher gets along fine with children, other Affenpinschers, and other dogs or household pets, especially those they have been raised alongside. Affenpinschers may be alarmed by unknown visitors. The Affenpinscher enjoys playing and occasionally getting into trouble, like the monkey after which it is named! While generally quiet, the Affenpinscher can become aggressive when agitated and may occasionally pick battles with larger dogs.