I am not a breeder - but I am reading this great book - For the Love of Dogs by a certified canine behavior specialist and breeder Patricia McConnel, and there is a section on enhancing singleton's ability to tolerate annoyances and stress. Its really clearly written!  Amazon.com: For the Love of a Dog: Understanding...
Good luck!
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Roving dogs do not indicate the civilization or compassion of the society; they betray on the contrary the ignorance and lethargy of its members. -Ghandi |