Fitting A Dog Harness This entry was posted on 11th July 2013 by Wolf. Fitting a harness. It’s not as difficult as it might seem but there a large variety of harnesses available which can make fitting a dog harness seem like a daunting task. The key is measurements. Below we have listed the types of harness that we would recommend for different activities, hopefully making it a little easier. When fitting a harness it is essential to take the measur …