There is no way to guarantee the safety of your dog off leash. I would like to think that if we trained hard enough, or long enough, or with the right methods, that we could overcome all of the risks, that our dogs really could be completely reliable and safe. But the fact is that when dogs are off leash in an unsecured area, there will always be a chance that their instincts or desires will lead them into the path of danger. In addition, our environment is often unpredictable. When dogs are off leash, there is the chance of a sudden bang, an unexpected animal, or something else that may frighten or harm our dogs.