If you're finding the dog is pulling on the leash too much during your walk, it is best to discuss options with the dog owner on how to prevent this. The owner will likely know of this issue and can assist you with how they usually manage their dog's pulling. You may find a simple balance harness works great to help you gain more control over the dog during your walk.

If you are not comfortable with the dog you are walking, please be transparent with the owner. Let the owner know that you no longer wish to be their dog walker in a friendly and polite manner.