[header] How to find a good guard dog [title] Decide why you need a guard dog. [step] If you know why you need a guard dog, you may be able to find one that is best suited to your purposes. Guard dogs should be used to defend your home and property; they should not attack any stranger at will. 
Instead, they need cautious instincts to know when their family is in danger and when they are safe. You might need a guard dog to : [substeps] Alert you if strangers are nearby.