You are expected to control you're pets.
Jared is walking his dog in the dog park and his dog starts to bark and try to run towards a stranger's dog.
Jared wants his dog to enjoy the day in the park.
Jared holds tightly onto the leash and reigns in his dog to calm him down.
Jared lets go of the leash and allows his dog to run.
Jared and the stranger get to peacefully walk their dogs.
The dog attacks the stranger or their dog.