There’s a popular saying among dog trainers: “There’s no such thing as a bad dog.” While that may be true, any trainer will admit that there are dogs with very bad habits.
Simply put, behavior is a way of acting and reacting. When a dog acts or reacts to a situation in a way that has a negative impact on her owner or others, the behavior is considered to be “bad.” Yet, to the dog, it’s just what she does.
Eliminating a bad behavior requires training to give the dog a new behavior, or habit.
Dogs Chewing
Another unpopular behavior is chewing. Destructive chewing is most often an 
indication your dog is bored. If your dog chews up the couch cushions or destroys a wicker chair while you are at work, it is probably because she had nothing else to do. If you look up from a book or television to find your dog chewing on your favorite shoes, realize that she is releasing pent-up energy.
Give your dog the chance to exercise her body and brain. Plenty of physical exercise will tire her out so that she naps while you relax.
Pet supply stores carry a variety of toys that provide mental stimulation-doggie puzzles to keep your pooch busy while you’re away. Also, if your dog is a chewer, make sure you give her chewing toys of her own.
It is never a good idea to give your dog an old shoe or sock to chew on; she can’t tell the difference between your favorites and your discards because they all smell like you.