Which means yes, he is required to allow an ACTUAL service dog. An ACTUAL service dog is not required to have identifying vest, nor documentation.Has anyone ever printed out forms to have clients sign in order to basically "CYA". Working Dogs For Vets' No Veteran Left Behind program allows disabled heroes who are able, to help train their own service dog. 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. To accommodate park visitors and to protect park landscapes, dogs must be leashed in all areas from 9 a.m. We have created this guide to help get you started with some of the most crucial items to include in your dog walking contract.