Working Dogs, Other
being moved to http://sofyalarus.org/index.php?title=Other_Working_Dogs
Master Gerald's Livejournal on dogs working wheels: http://gerald-goodwine.livejournal.com/1598.html
The above mentions dogs leading the blind as shown by Stradanus in the 1580's. It also references Agricola’s use of dogs with packsaddles to backpack bags for collecting ore up steep mountain slopes.