A nervous and anxious dog can be challenging to own. They are often very sensitive, stressed, or even shut down if the owner does not understand their fear. When a pet develops this kind of emotional behavior, they may become fearful of anything new in their environment, making it difficult to train. Every time an individual walks through the door or sits on the couch where your pet usually lies down. He becomes anxious and aggressive out of his fear that you will leave him again. Thus placing much strain, this places on both human-animal relationships. Why? Because it forces owners to limit what they do around their pets for safety reasons. Here are tips to help your nervous and anxious dog: