Seeing dogs off-leash by the roadside makes me very vigilant. I was knocked off my bike by one years ago on my way to work, on what was usually a busy road but luckily was clear at the time. The owner just casually strolled past as I untangled my legs and heaved the bike off , and called 'Allright?' then carried on. She seemed supremely unconcerned. I carried on to work, fuming, where I was overtaken by the shakes and my worried workmates plied me with sweet tea. No damage, just a bruise or two. I didn't see the woman or the dog on that route again though.