Denise willis dog training provides training to end anxiety or nervousness in dogs there are a gazillion reason why anxiety/nervousness in dogs. some are easily identifiable and others not so much. what’s important is to acknowledge that it exists and help your dog move forward from it.. Why dogs get anxiety disorders. the way anxiety disorders develop in a dog or other domesticated pets are much the same way they would in a human. anxiety is a reaction to stress or fear and can be brought about by changes. in a study that addressed anxiety in dogs, it was found that 72.5% of all subjects exhibited some form of anxiety-like.