
This article will explain that many small hernias cause no problems at all,
http://www.showdogsupersite.com/kenlclub/breedvet/umbilical.html and certainly wouldn't;' stop a dog being shown.
For a time the KC decided that if a Hernia had to be repaired that the dog could not be shown, but for the time being they have changed their view on that,a s I think the jury is out on inheritance, probably because of differentiating serious hernias and small late closures.