its a natural phenomenon for dogs to run behind bikes and Cars .Actually these dogs smell the other dogs marking on car or bike.A loud voice makes them go away .
If this dog lives somewhere near you, twice or thrice give it a treat, it will never run to attack but for love.We need to understand their behavior and nature.Plz beleive me they remember your piece of roti more than human whom you may be feeding lifelong.
If this dog lives somewhere near you, twice or thrice give it a treat, it will never run to attack but for love.We need to understand their behavior and nature.Plz beleive me they remember your piece of roti more than human whom you may be feeding lifelong.