Wild dog behavior is not acceptable in a household pet. Here's everything you need to know about this behavior.
Wild Dog Behavior
Domesticated dogs no longer live in the wild, but their ancestors formed the wolf packs that roam the wilderness hundreds of years ago and even today. As a pet owner, you'll see various behaviors that seem out of place in the home, but when you think of them in the setting of the ancient outdoors, they'll make perfect sense.
Dogs are pack animals, and as part of a pack, they need a strong leader. In the wild, this "alpha dog" would be the strongest and most aggressive of the males, but in your home, you should be the leader. Pack animals are highly social creatures, and dogs are extremely talented in reading body language, facial cues, and even voice inflections for meaning and intent. They learn to respond to what you're not saying, almost more than what you do say. Pack animals also do not like to be left alone, and will become unhappy and possibly depressed if not engaged in regular socializing.
Dogs are also highly aware of threats, whether they're real or just perceived. 
A small child running toward your pooch may not be any kind of a threat at all, but to your dog, it could be a very real and frightening situation. Dogs still carry vestiges of the wild within them, and in moments of stress and anxiety, just may lash out in a way that might surprise you.
In the wild, dogs would dig holes for protection from weather and other predators. Females would dig holes to create nests for their pups. It's instinctive behavior, not just Fido being naughty.
Barking was a valuable tool for dogs in the wild. It would serve as a signal to the pack that danger was nearby, or serve as a beacon if a dog was separated from the group. It would also serve as an alarm to notify the group that intruders were approaching.
How To Manage Wild Dog Behavior
Even though many of your dog's behaviors are a result of her ancestors, that doesn't mean you have to live with Wild Dog Behavior in your home. Domesticated dogs can and regularly are trained to overcome instinct and act another way. You just have to teach her that it's worth it to let the old ways go. Training with treats and lots of praise is the best way to turn wild dog behavior into a thing of the past.
