Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to check the health of a new dog [title] Schedule an initial checkup with your vet. [step] If you already have a vet you know and trust, take your dog to see them without delay. Catching any potential infections as early as possible is vital to your new dog's survival.

Ending1: The vet should do everything they can to help your new dog. [title] Help with their vaccinations. Ending2: This step is especially important if your new dog is a puppy. Early diagnosis of a viral infection of another contagious disease can save your new dog's life. Ending3: [substeps] Schedule an appointment with your vet as soon as possible to ensure that you are on schedule. Make the appointment at your vet if your vet advises it. Ending4: Your vet will also be able to keep you informed of the best treatment options. [title] Inquire about regular doctor visits.

Answer format: ending1/ending2/ending3/ending4