It's not just serotonin either-most neurotransmitters can cause anxiety or anxiety like symptoms, and in some cases an over-abundance of a chemical can lead to anxiety. So it does appear that you can develop it without experiencing a stressful life.
Howard Heinzl (1918 - 1989) With regard to blue American Staffordshire Terriers, any breeder that believes that a blue American Staffordshire Terrier is some how more valuable than the other recognized colours, is not only deceiving themselves, but they are also deceiving their customers.
The Staffordshire Bull Terrier is a stable, intelligent, affectionate and obedient dog. They are well known for their reliability as a companion and as a family pet.It has a cheerful appearance and a positive outlook on life.These dogs also possess a fair amount of self-confidence. tired dog is a happy dog. If the Staffordshire Bull Terrier is exercised properly, they will be quiet and calm in the home. Other activities that Staffies excel in are agility, advanced obedience, tracking, and weight pulling.