Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to prevent rabies in dogs [title] Have your dog vaccinated. [step] The first vaccine is given to puppies from 12 weeks of age. Check with your veterinarian about when your puppy is ready to be vaccinated.

Ending1: [substeps] If you have found a dog or adopted a dog whose history you don't know, be sure to get it vaccinated. Once your dog is vaccinated, you should get a certificate that it has been done for your records. Ending2: Your veterinarian will provide a recommendation based on his age and current health. [substeps] Do not vaccinate more than three puppies per week. Ending3: If your dog is at rest at the start of the vaccination, you should begin giving your pup the vaccine between 6-8 weeks old. [substeps] For puppies that have been vaccinated earlier than 12 weeks, you should start the vaccination at 8 weeks of age. Ending4: [title] Get your dog spayed or neutered. [step] The first vaccine that is given at 12 weeks of age is called the rabies vaccine.

Answer format: ending1/ending2/ending3/ending4