Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to get a dog to use a treadmill [title] Set up the treadmill. [step] Before you can begin training your dog, you'll need to set the treadmill up in the proper fashion. [substeps] The treadmill should be positioned so it is not facing the wall and your dog will not be facing the wall when walking on it.

Ending1: You don't want your dog to think she's going to walk into the wall if she uses the treadmill. [title] Familiarize your dog with the treadmill. Ending2: Your dog's body should be leaning slightly towards the area the treadmill is positioning to lunge. Hold a leg strap in front of your dog's body and place it about shoulder width away from the treadmill, back turned. Ending3: There are several ways you can set the treadmill up. Some dumbbell sets allow you to lift a weight in two ways: down and up. Ending4: Set the treadmill up so it is in front of you with the front angled back toward your dog's back. Use floor padding along the outside edge of the treadmill or use a two by four for your dog.

Answer format: ending1/ending2/ending3/ending4