Your dog should be on a leash whenever your dog is off your property or at danger of running away. However, the choice of whether to use a collar or a harness depends on a number of factors. Tugging on the collar of a small dog could cause injury to his neck or back. Thus a harness might be a better choice since it transfers the pressure to the shoulders instead. A harness on a big dog might give him much too much power and he could drag you around the neighborhood with ease. A collar might be a better choice for large dogs. Then there are the medium-sized dogs in between. Consider your dog’s breed, age and weight when choosing either a collar or a harness. Take care in selecting a collar or harness that fits well and meets your needs in protecting your dog from harm. Learn more from your Frisco, TX veterinary clinic. Or click this link: http://planotxvets.com/