Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to decide if a dog is right for you [title] Be ready for your new pet before he gets there. [step] Welcoming a new dog into the family home can be an exciting time for everyone. But buying a dog is not like buying the latest household gadget; dogs are living beings that require your love and attention.

Ending1: Adopting a dog while you're grocery shopping, going for a run, or catching up on television can be emotionally taxing even more. [substeps] Avoid introducing a new dog into your life right away. Ending2: Make sure you have work and job schedules ahead of you before spending time with your new pet. [title] Be prepared for your new dog to be skittish. Ending3: Training a new puppy can be very frustrating and caring for a dog can be very costly over their lifespan. Responsible pet ownership starts before you take your new dog home. Ending4: Prepare yourself for all sorts of unpleasant surprises. [substeps] Give your new dog a space to curl up, safely and preferably on a sofa.

Answer format: ending1/ending2/ending3/ending4