General American Dog Trainers Network A comprehensive resource center for dog owners http://www.inch.com/~dogs/ Behavior Issues and Training From the Rose Croft Cairn Terriers website http://cp1.inreach.com/~rose-cro/behavior_training.htm Dog Aggression/Pack Hierarchy Living with Multiple Dogs By Judith Halliburton, from Raising Rover http://www.geocities.com/Augusta/2525/multidogs.htm The Macho Myth By Ian Dunbar http://www.clickersolutions.com/articles/2001/macho.htm Behavioral Changes Associated with Thyroid Dysfunction in Dogs A comprehensive overview of the effects low thyroid can have on behavior, including aggression, hyperactivity, anxiety, etc. http://www.doglinks.co.nz/health/aggr_theroid.htm Puppy Mill Dogs Rehabilitation of a Puppy Mill Dog By Michelle Bender and Kim Townsend http://www.anewstartonlife.com/article_read.asp?id=2