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.
A member of the molosser breed group , both the American Staffordshire Terrier and the American Pit Bull Terrier ( APBT ) were bred from the same lineage , but received different names from the two American kennel clubs ; American Staffordshire Terrier was the name given by the American Kennel Club ( AKC ) , and American Pit Bull Terrier by the ...