While the concept of a guard dog is not exactly new, these animals are closer to investments in security — many of the top-line pooches sell for upwards of $150,000.

Barré said t he dogs live in separate shelters insulated against the cold and covered by a blue plastic tarp. He's rented the dogs for five years and hasn't had any trouble, he said.

100+ Scary, Tough, and Strong Guard Dog Names originally appeared on PetHelpful. Since we first domesticated dogs, they've served us as brave, valiant protectors, guarding our livestock, homes ...