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 two are now being recognized as separate breeds. Today the American Pit Bull Terrier is being bred with the same gentle qualities as the American Staffordshire Terrier. They both make great pets with the right kind of owner. The American Staffordshire Terrier was recognized by the AKC in 1936. Some of the American Staffordshire Terrierâs talents are watchdog, guarding, police work, weight pulling and agility.