Might wanna look into Schnauzers 
From wiki : "The smallest of the working breeds, the Standard schnauzer makes loyal family dog with guardian instincts. Most will protect their home from uninvited visitors with a deep and robust bark. Originally a German farmdog, they adapt well to any climatic condition, including cold winters. In general, they typically are good with children and were once known in Germany as "kinderwachters". If properly trained and socialized early to different ages, races, and temperaments of people, they can be very patient and tolerant in any situation. Like other working dogs, Standard Schnauzers require a fairly strong-willed owner that can be consistent and firm with training and commands."
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"Like most working dogs, Standard Schnauzers will be rambunctious until about the age of two; and lots of exercise will keep them busy. Owners must be prepared to mentally and physically stimulate their Schnauzer every day, even into their old age. Like other high-intelligence breeds, a bored Schnauzer is a destructive Schnauzer."
From wiki : "The smallest of the working breeds, the Standard schnauzer makes loyal family dog with guardian instincts. Most will protect their home from uninvited visitors with a deep and robust bark. Originally a German farmdog, they adapt well to any climatic condition, including cold winters. In general, they typically are good with children and were once known in Germany as "kinderwachters". If properly trained and socialized early to different ages, races, and temperaments of people, they can be very patient and tolerant in any situation. Like other working dogs, Standard Schnauzers require a fairly strong-willed owner that can be consistent and firm with training and commands."
...
"Like most working dogs, Standard Schnauzers will be rambunctious until about the age of two; and lots of exercise will keep them busy. Owners must be prepared to mentally and physically stimulate their Schnauzer every day, even into their old age. Like other high-intelligence breeds, a bored Schnauzer is a destructive Schnauzer."