Dogs are DANGEROUS even if they are just chasing or playing around. A dog under the wheel could cause a serious wreck and cause you an serious injury and damange your bike.
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A very good friend of mine is currently recuperating from an accident involving a dog. He was cycling a few weeks ago on a country road. A man was walking his two dogs in the opposite direction and as my friend approached one dog ran toward him. The dog was not approaching aggressively. It was more like he was running to greet him so my friend kept riding. Just as the dog got to him he (the dog) turned right in front of my friend. Friend hit the dog, came to an abrupt stop, fell on his right side and broke his femoral neck.
Emergency surgery that afternoon to reattach (three LONG screws) & hope to get blood flowing to the "ball" once again. He will know next Friday if it worked. If not, he will have to have hip replacement. Meanwhile, he cannot put any weight on it and has only just started therapy. It will be at least 3 months before he can get on a bike again.
Be careful around dogs!
"When I'm on my bike I forget about things like age. I just have fun." Kathy Sessler
2006 Independent Fabrication Custom Ti Crown Jewel (Road, though she has been known to go just about anywhere)/Specialized Jett