To be eligible for a service dog in Illinois, the handler must have a qualifying physical or mental health disability. This page provides resources for those seeking information on service animals.A service animal must be permitted to accompany a person with a disability in areas subject to the ADA, such as businesses that are open to the public. Service animals are: Dogs, Any breed and any size of dog, Trained to perform a task directly related to a person's disability. In Illinois, there's no rule requiring service dog registration. But many handlers opt to register their dogs in voluntary databases to get ID cards. Illinois and federal law protect the right to have service dogs in public places and may cover other service animals in housing. STEP ONE: Please fill out all forms, questionnaires and charts. RFI recognizes that demand for autism service dogs is high and availability is limited. Do You Need to Register Your Emotional Support Animal in Illinois?