Most typically these behaviors include those mentioned above, however, generalized depression, diarrhea and self-mutilation can also occur in dogs who are extremely stressed. The behaviors associated with separation anxiety follow a somewhat predictable course. Many dogs bark excessively when they are first left alone. Some dogs continue barking for hours while others go on to choose another behavior when barking does not bring about their owners return. Many owners inadvertently reinforce increased vocalization by returning to console their unhappy pet.
Some dogs become very destructive when left alone.
Their high level of stress causes them to dig, chew or scratch doors, rugs or household furnishings. An otherwise well trained dog will suddenly chew or shred anything left in its path in an attempt to find relief from the anxiety it feels from being left alone. It is very common for these episodes to also include urination and defecation in the house. Usually this occurs in well housebroken dogs and happens within minutes of their owners departure, even if the dog has recently relieved itself. There are several effective ways of correcting or at lease minimizing these objectional behaviors.