3.5 miles on the trails with my wife and Tiny Elvis. Ran into a knothead dog that was following (actually leading) an evidently knothead gal on a fat tire bike; we got off the trail to let them by- the dog comes running up growling and hackled up, Tiny E is on a leash and behind me- the dog got close enough I kneed him in the chest, hard! The girl appeared to be oblivious to the whole thing, wanted to knock her ass off the bike!