Share 'Dogs! what do you do?'

What do you do to defend yourself from dogs on runs? this morning on a 4.5 run at my one mile mark i was attacked by a large chocolate lab. as i ran he lunged at me twice catching my pants and the second got my left butt cheek. my pearl izumi syncroinfinity landed right under his chin when i reallized he wasn't finished. my garmin confirms myh highest heart rate of the run while not actually run…