The American Disabilities Act (ADA) requires that businesses allow people with disabilities to bring their service animals onto business premises in whatever areas customers are allowed. If you enter a business and are told that you cannot bring your dog inside, you simply tell them that this is your service dog. By law, a business is not allowed to ask you what your disability is, nor can they demand proof that your dog is “certified”. Each state may have additional laws that provide protection to service dogs and the people they serve. You may want to read further information on laws specific to your state.
In addition, a service dog is also legally permitted to travel on any public transit system with their owner (not in cargo) including buses, trains, boats, planes, etc. For complete information on traveling with your service dog, please review the special set of regulations dealing with airline travel.