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.
Description. The Staffordshire Bull Terrier is a muscular dog, very strong for its size. The head is short and deep with a broad skull, short foreface, distinct stop and strong jaws. The nose is black.The teeth meet in a scissors bite.he Staffordshire Bull Terrier is a muscular dog, very strong for its size. The head is short and deep with a broad skull, short foreface, distinct stop and strong jaws. The nose is black.