The notion of breeding German shepherds to wolves dates back to the 1800s. Max Von Stephanitz spoke out against this idea in 1925 in his book, The German Shepherd in Words and Pictures. His question was a reasonable one: Why reintroduce wild characteristics, unpredictable behavior, and predatory drives into a domesticated, highly trainable dog?
Most important, the temperament of a wolf dog is extremely unpredictable. Wolf experts explain that wolves raised from birth in a controlled environment can behave almost like domesticated dogs for years, allowing handling and grooming by a variety of people. However, all it takes is a wobbling toddler to initiate the predatory instinct and the wolf can never be trusted again.
A wolf dog is defined as a cross between a dog (often a shepherd) and a wolf, a wolf dog and a dog, a wolf dog and a wolf, or two wolf dogs. Wolf dogs are relatively rare; however, they have a disproportionately high number of human fatalities attributed to them in the United States (twenty-three in the last two decades).
Wolf dogs cannot and should not be trusted by humans. These crosses are not German shepherds and should not be purchased or raised as companion animals, no matter how experienced the owner. Though wolf dogs have varying temperaments, there's no telling when one animal's wild instincts could rise to the surface.