Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to train an older dog to walk calmly on a leash [title] Pick the right kind of leash. [step] A dog that needs leash training could benefit from the use of a training lead. This is a short leash that keeps the dog at your side.

Ending1: This kind of leash will let you correct bad behavior quickly and effectively by redirecting the dog away from distractions. [title] Avoid using punishment-based training techniques. Ending2: A more senior dog needs a longer lead. Long leash is less dangerous for a trained dog. Ending3: This type of leash dog training is best for the older dog that is quickly learning to walk, staying on leash, and so forth. [substeps] A leash that requires a trained dog is best designed for older dogs and more durable than a training one for the older dog that is not a good fit for him. Ending4: A full leash has long short or medium front feet, while a full leash has long front feet or medium length short feet. Getting a full and medium leashes will allow you to maintain control of your dog while also stimulating you both with the clicking and bending of the leash.

Answer format: ending1/ending2/ending3/ending4