We always recommend an ID tag on your pet at all times. When your dog is given a rabies vaccination, a rabies tag is issued. This tag has a number on the bottom that corresponds to your pet. If your pet gets out of a yard and someone finds him, there is a phone number on the tag of the veterinary hospital. When you call the hospital, you may give the number on the bottom of the tag, and the pet’s information can be located in the computer. Also, the city of Billings requires your pet to be licensed if you live in the city limits. To license your pet, you may take a current rabies certificate to the Yellowstone Valley Animal Shelter, and they will license your pet. Your pet is required to have a city license by the age of 6 months. This gives you time to spay/neuter your pet, which makes licensing your pet less expensive. The shelter will issue a tag for the license also which is recommended to be on your pet’s collar.