Sheperds have the highest rate of attacks.  They just don't kill as much, so they don't get the bad press... just saying.
After a hectic week featuring 10 to 12 hour days, I had missed a couple of workouts and between client appointments, decided to take a job through the Oak Parkway Trail, around the corner from my house. 
It was beautiful. Crips, cool air, oak leaves covering the ground, a couple of very polite kids on skateboards waited for me to pass as before jetting down the hill. All was going well. As I headed down the hill, I saw a couple about 100 yards ahead, on the side of the trail, with a German Shepherd. As I approached, I could see that they had the dog on a short leash, and was relieved. 
Never the less, as I passed, the dog suddenly lunged at me, and the woman pulled hard on the leash as the guy yelled, 'NO!' and grabbed the dog around the snout. 
Good times.