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 Aussiedoodle comes in a wide range of colors and patterns! * Phantom is a term used in the poodle breed to describe the tan markings on the face, chest and legs. In the Aussie breed this Tan is called copper, and puppies are refered to as Tri color! Below are some pictures of adult F1 - F1B dogs.