Robin, you struck my curiosity so I searched the Wisconsin DNR Game Regulations Pamphlets for reg on dogs and hunting. (Red and Grey Fox are “Furbearing Animals”)
From http://www.dnr.state.wi.us/org/land/wildlife/regs/SGHunt09.pdf
Use of dogs for hunting
Dogs are legal to use for hunting Small Game Mammals, Game Birds*, Furbearing Animals, Migratory Game Birds, and Unprotected Species. Dogs must be leashed at all times on Waterfowl Production Areas (WPAs) unless engaged in legal hunting activity.
No number is specified anywhere in the small game pamphlet.
FYI Wisconsin Dog Training and Trialing Regulations http://www.dnr.state.wi.us/org/land/wildlife/captive/dog_train_trial.pdf
From Wisconsin Hound Dog Training Enclosure Regulations http://dnr.wi.gov/org/land/wildlife/captive/hound.pdf
- Number of dogs. No person may place or allow the placement of more than 3 dogs into any coyote or fox hound dog training enclosure for each coyote or fox that is present in the enclosure.
This would only apply to training, not to actual hunting.
From what I read the 6 dogs rule only applies to bear hunting, not to fox hunting. I find that here in the Bear Regulations pamphlet http://dnr.wi.gov/org/land/wildlife/regs/09BearRegs.pdf
Dog Training and Use
It is illegal to:
Hunt, train dogs, or pursue bear with more than 6 dogs in a single pack, regardless of the number of bear hunters or the dog’s ownership.
Note: Dogs that fall out of the chase may be replaced, but no more than 6 dogs may be used to pursue bear regardless of the number of bear hunters and regardless of the dog ownership.