Growing up we had neighbors with an ostrich farm, we had to put a couple of those big birds down over the years and the only way to skin them was to make a small incision in the scaly part of the leg and pump them full of air... I few well placed cuts and about ten minutes of work and the big birds were perfectly skinned out... The hides at the time were worth big $$$ so we couldn't make holes in them... I haven't tried it on "dogs" yet but plan on it, as it can be painstaking!!!!