95% of the time, the dogs just want to run; they see a moving object and they chase after it. The other dogs are intent on chomping you on the leg.

This makes for good sprinting practice.

I get tired of people on group rides screaming like banshees because some golden retriever has woken up and trotted out to say hello.

No fun being chased by those pitbull/greyhound mutts that seem so prevalent where I live.

I usually will head straight at an aggressive dog to throw him off-stride; it's usually enough to get a gap on him and I'm off. A squirt from the water bottle will also throw them off-stride.