You can't remove inbred behaviors and habits from your Cardigan Welsh corgi, but you can manage the dog's behavior so that his instincts are given appropriate outlets. Make sure that your dog gets plenty of exercise every day. Allow him to chase toys, and to socialize with other dogs. If your dog is physically and mentally tired, anxiety habits such as excessive barking are less likely. You can reduce or eliminate unwanted behaviors by ignoring the behavior, providing an immediate deterrent or redirecting the dog to do something more desirable.