A few weekends ago I did my first Century in rural Georgia. I was coming up on a significant hill and a tiny dog comes up barking. I slowed down as he approached and then sped up. The dog kept pace at about 15 MPH for a while. I was impressed, and told the dog so. Eventually he went home.

As I reached the top of the hill I was spent. But to my right this HUGE dog (forget the name of the breed, the ones they use for police dogs) just starts running for me. He's galloping like a horse and barking. I was pretty worried that I might get seriously injured if he caught me. I took off pretty fast and luckily out ran him.