Fear aggression is unlikely to improve with time. Consult with your veterinarian to rule out physical causes for aggression. Your vet may be able to recommend over-the-counter anti-anxiety products, provide a behavior modification plan or refer you to a positive-reinforcement trainer in your area.
How do you fix fear aggression in dogs?
-Use your dog's own body language to keep him calm. Try turning away from the scary thing and pretending to yawn. Keeping yourself calm can help keep your dog calm. –Back away from a cage or crate door after you open it and use treats to get a fearful dog to come out on their own.
Can fear aggression in dogs be cured?
It is important to note that while the prognosis is good for many fear aggressive dogs there is no 'cure' for aggression. ... Contact a qualified humane positive trainer to work with you and your dog using humane desensitization techniques. These will give your dog more confidence to cope with her fear.

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