Disability Rights Center NH. Service and Companion Animals'Under the Americans with Disabilities Act (ADA), privately owned businesses that serve the public, such as restaurants, hotels, retail stores, taxicabs, theaters, concert halls, and sports facilities, are prohibited from discriminating against individuals with disabilities. The ADA requires these businesses to allow people with disabilities to bring their service dog onto business premises in whatever areas customers are generally allowed. With some exceptions, this requirement extends to miniature horses (ranging in height from 24-34” and weigh between 70-100 lbs.) that are deemed service animals.'