Since March 15, 2011, only dogs and miniature horses have been recognized as service animals under titles II and III of the ADA.
Service animals are defined as dogs or miniature horses that are individually trained to do work or perform tasks for people with disabilities. Examples of such work or tasks include guiding people who are blind, alerting people who are deaf, pulling a wheelchair, alerting and protecting a person who is having a seizure, reminding a person with mental illness to take prescribed medications, calming a person with Post Traumatic Stress Disorder (PTSD), or performing other duties.
Service animals are working animals, not pets. The work or task a dog has been trained to provide must be directly
related to the person’s disability. Dogs whose sole function is to provide comfort or emotional support do not qualify as service animals under the ADA.
Under the ADA, service animals must be harnessed, leashed, or tethered, unless these devices interfere with the service animal’s work or the individual’s disability prevents using these devices. In that case, the individual must maintain control of the animal through voice, signal, or other effective controls. Unruly and threatening animals will be denied service.