Chase! Quotes

“If you have a dog who—at least some amount of the time—has to walk on the field leash, you should absolutely make sure that he is fitted with a harness. In general, using a harness instead of a collar is preferable, but if your dog is on a long leash, it is vital. The danger of injury that a dog is exposed to is extremely high when he reaches the end of a leash with fifteen, thirty, or more feet. The entire pressure of the jerk he receives when he hits the end of the line is distributed across the cervical spine, larynx, thyroid, and trachea. You can compare this to the impact of crashing into another car at about 35 mph. Remember: we humans put the seat belt across our chests and don’t wrap it around our necks—and for a good reason. In my opinion, wearing a harness is always more sensible than wearing a collar—in field leash training it is indispensable!”
― Clarissa Von Reinhardt, Chase!: Managing Your Dog's Predatory Instincts