I finally completed the diagram, but before publishing it I sought the opinion of Professor Dr Martin Fischer - author of 'Dogs in Motion' and one of the worlds leading authorities on canine locomotion.
His response to me was as follows;
This is the best explanation I have ever read on this aspect of canine locomotion! Congrats!
Professor Dr Martin S Fisher - Institute of Systematic Zoology and Evolutionary Biology, Erbestrasse, Germany.