A dog likes to gnaw something. Like a branch, a plant or a pair of shoes.
You might not be pleased at his choice... However, it's natural so to cure of
will be mostly impossible. Therefore try to control the gnawing.
Teach your dog in the egg you're allowed to can take things away from him.
Chewing is good for the teeth and relieves boredom. Though chewing can
also be seen as a control game: 'this is mine and nobody may take it'.
You are his superior and cannot tolerate this behaviour.
When you take away something growling is out of the question.
You rank the dog so do not be scared and punish its behaviour immediately.
Keep in mind that the language of dogs differs from ours.