Wow! Crazy stories in this thread! I guess I've been fortunate. I've been chased several times and even felt dog breath on my calves a few times. Heck, I even had a woman sick her dog on me for having the audacity to casually ride by her house on a Saturday afternoon! But I've been lucky that all the dogs that have chased me have been on flat roads or downhill. I tend to not think about using my waterbottle since usually by the time I see the dog, it's already chasing and I don't want to slow down. I really need to find a small spray can of mace!