A Pathological Dog that displays disturbing behavior can be frightening. Here's everything you need to know about this condition. Normal Behavior Versus Abnormal Behavior
All dogs have strange habits and abnormal tendencies; it is when their behavior crosses into the pathological realm that the owner should seek advice from a veterinarian.
Determining Whether Your Dog is Pathological
Determining whether your dog's behavior is pathological can be a difficult diagnosis. When there is no clear pattern or reason for a dog's strange or disturbing behavior, it may be defined as pathological. Maladaptive and compulsive behavior also has the potential to be identified as pathological. This behavior can include obsessive tendencies accompanied by aggression or hostility.
When a dog shows the aforementioned behavior, other causes should be ruled out before diagnosing the dog as pathological. While compulsive or aggressive behavior may be a sign of a 
mental defect, it could also be a reaction to something in the environment. Seemingly pathological behavior could be a symptom of untreated physical pain or an abrupt change in surroundings as well.
When a normal and obedient dog suddenly develops apparently pathological tendencies, professional advice should be sought immediately. A change in demeanor may be a result of a medical condition. If addressed from the onset, it is oftentimes possible to eliminate the problem before it becomes a major medical issue.
What To Do
If a veterinarian examines the dog and determines that he is in fact pathological, there are several courses of action you can take. Depending on the type of pathological behavior the dog is displaying, you may choose to do nothing. If the behavior is simply strange, but won't pose a threat to you or the dog himself, extensive measures need not be taken to alter the dog's lifestyle. Several simple accommodations will need to be made for this kind of dog, but nothing life-altering.
However, if the dog is posing a threat to himself or the people around him, psychoactive medication may be deemed appropriate. This decision is left to the veterinarian. Other alternatives should be exhausted before turning to this option. Psychoactive medication helps to alter the way the dog thinks, acts, and perceives his surrounding environment. Keep in mind that medication is not one hundred percent effective and should only be used as a last resort.
Behavior in dogs can be both alarming and confusing. Show patience for a dog showing pathological behavior and always make sure to consult a veterinarian.
