Can I exclude an animal that doesn't really seem dangerous but is disruptive to my business?

Yes.  A business has the right to deny access to a service animal that disrupts their business.   For example, a service dog that barks and disrupts another patron’s enjoyment of a movie could be asked to leave.   Also, businesses, airlines, public programs and transportation providers may exclude a service animal when the animal’s behavior poses a direct threat to the health or safety of others.  However, some animals may be trained to whine or bark as part of doing their job.

A decision to exclude a service animal cannot be based on the notion that an animal might threaten the safety of others. It also cannot be based on a business person’s assumptions or bad experiences with other animals.  Each service animal must be considered individually.