Are there circumstances in which a business can ask me to leave with my Service Dog?

Yes, although these are very limited circumstances. For example, if a disabled handler is not adequately controlling or attending to a misbehaving service animal (who is barking, unruly, defecating or urinating in the area, etc., the handler may be legally asked to remove the service dog.Although hospitals, medical or dental offices, and other healthcare provider sites, as places of public accommodation, must permit the use of a service animal by an individual with a disability, they may enforce “no pets” policies in certain areas (such as operating rooms) if they can show that permitting service animals in would result in a fundamental alteration or safety hazard to those areas. For example, if appropriate medical personnel can show that the presence or use of a service animal would pose a significant health risk in certain designated areas of a hospital, then service animals may legally be excluded in those areas (ADA Title III Technical Assistance Manual, 4.2300).Similarly, zoos must modify their policies to permit the use of a service animal by an individual with a disability unless the animal creates a fundamental alteration or safety hazard. Zoos have debated the effects of service dogs in particular being perceived as predators by the resident animals and stressing the animals. Exclusion of a service animal must be based on fact, not assumptions. Because zoo animals are exposed to multiple stressors (behavior of visitors, loud noises, etc.) the exclusion of a service animal from an area would have to be supported by actual evidence – not simple perceptions or assumptions.