Dogs really are the only thing about cycling that I hate. This weekend I was riding with a freind and 2 dogs came at us. They looked harmless, just barking, but you could tell they were intimidated too. But when we stopped yelling at them to go home and turned our backs on them, one of them ran up from behind and bit my freinds rear wheel. No harm done to the bike. I hope it loosened some teeth on the mutt.