An ACTUAL service dog is not required to have identifying vest, nor documentation. There is no federal law that mandates the registration of service animals or requires them to wear specific tags or vests.Can a landlord require documentation for a service dog California? No, landlords cannot require documentation for a service dog in California. A service dog should be wearing a vest that identifies it as such and, in some locations, they must also display an official tag or ID card. Service Dog Policies: Pets are not allowed in the hotel. If you have a pet that is not a service animal, we respectfully request that you honor the good. A dog walking contract will outline the expectations of both clients and dog walkers before service begins. What are some common misconceptions about service animals? A service animal must wear a vest.