INTERRA recommends to read these articles:
About the Stafforshire Bull Terrier: http://issuu.com/thestaffordknot/docs/sbt-seminar_v13_final_edit_may_27th?e=2104749%2F8019718
Comparison between Lakeland and Welsh: http://www.dogchannel.com/dogsinreview/comparison-lakeland-welsh-terriers.aspx
Comented and Illustrated standard of the Bull Terrier: https://issuu.com/3nricox/docs/bullterrier
If you are looking for a Terrier puppy, please search for your country's Terrier Club that will recomend you BREEDERS, and not Puppy Mills. Protect yourself, and protect the dogs. Only credited breeders can assure that you will get a Terrier fit to function, acording to the standard, with correct temperament and good health.