Start with the job, not the vest
A vest, patch, harness, or online certificate does not determine whether a dog is a service animal under the Americans with Disabilities Act. The central question is whether the dog is individually trained to perform work or tasks that are directly related to a person’s disability. The U.S. Department of Justice also makes clear that service dogs are not required to complete a professional training program and are not required to carry a federal certification.
That distinction is useful because it keeps the focus on function. A dog might guide a person who is blind, alert a handler to sounds, retrieve needed items, interrupt a disability-related behavior, or perform another trained task. The exact task varies with the handler’s needs.
What an emotional support animal does
An emotional support animal can provide comfort and companionship, and that support can be meaningful. Under the ADA rules governing public accommodations, however, comfort by presence alone is not a trained task. That means an emotional support animal does not receive the same public-access treatment as an ADA service dog.
Housing is a separate legal area with different rules, so a public-access answer should not automatically be applied to a rental or housing dispute. People dealing with a specific housing issue should consult the current federal housing guidance or a qualified professional rather than relying on a general web article.
Where therapy dogs fit
Therapy dogs usually work with their handlers to provide comfort or engagement to other people in approved settings such as hospitals, schools, libraries, or care facilities. Their access generally comes from an invitation or program policy, not from the individual public-access rights that attach to a trained service dog handler.
A therapy dog can be exceptionally well trained and still not be a service dog. Likewise, a service dog does not need to participate in therapy visits. The categories describe purpose and legal context, not a hierarchy of value.
Florida context
Florida law includes its own provisions addressing service animals and discrimination. Federal ADA rules still matter, and air travel is governed by a separate federal framework under the Air Carrier Access Act. Because laws and agency guidance can change, check the current source when the answer will affect travel, housing, employment, or a dispute with a business.
For everyday etiquette, the safest habit is simple: do not distract, feed, call to, photograph closely, or touch a working dog without the handler’s permission. Give the team room to move and speak to the person rather than to the dog.
A practical way to remember the difference
Think in three questions. First: is the dog trained to perform a disability-related task for its handler? That points toward a service dog under the ADA. Second: is the animal’s primary role emotional comfort without a trained disability-related task? That is different from an ADA service dog. Third: is the animal visiting or participating in a program to support other people? That is commonly the therapy-dog role.
Those questions are not a substitute for legal advice, but they are a much better starting point than judging a dog by a vest or an ID card.