Key takeaway: A service dog is individually trained to do work or perform tasks for a person with a disability. It can go into most public places under the ADA, fly in the cabin, and is presumptively allowed in no-pet housing. An emotional support animal provides comfort without task training. It has no ADA public-access rights, flies as a pet, and since May 2026 gets much weaker federal housing enforcement. The Justice Department says emotional support animals “do not qualify as service animals under the ADA.”[1]
How do ESAs, service dogs, and therapy dogs compare?
Training is the dividing line. Everything else, from public access to flights to housing, follows from it.
| Emotional support animal | Service dog (incl. psychiatric) | Therapy dog | |
|---|---|---|---|
| What it does | Comfort through presence | Trained tasks for its handler’s disability | Comforts other people in visits |
| Task training | None required | Required | Temperament and visit training |
| Species | Any common household animal | Dogs (the ADA also allows miniature horses in some cases) | Usually dogs |
| Stores, restaurants (ADA) | No right of entry | Yes | No; by invitation |
| Airplane cabin (DOT) | As a pet only | Yes, with DOT forms | As a pet only |
| No-pet housing (FHA, 2026) | Can request; HUD no longer enforces for untrained ESAs | Presumptively reasonable; HUD enforces | No special status |
| Documentation | Clinician’s letter for housing | None for public places; DOT forms to fly | Program credentials |
| Registration or certificate | None exists | None required | Through the therapy program |
What makes a dog a service dog?
Individual training to perform work or tasks directly related to its handler’s disability. Under the ADA, service animals are “dogs that are individually trained to do work or perform tasks for people with disabilities,” like guiding people who are blind or “calming a person with Post Traumatic Stress Disorder (PTSD) during an anxiety attack.”[2] A psychiatric service dog is a service dog whose tasks relate to a mental-health disability; see our psychiatric service dog guide.
No certification is required, and people may train their own dogs. What the law cares about is whether the dog is trained, not where the training came from.[1]
What makes an animal an emotional support animal?
A licensed clinician’s determination that the animal’s companionship helps with your disability, usually documented in an ESA letter. No training, test, registration, or vest is involved. The animal can be a dog, cat, rabbit, or other household pet.
The Justice Department is direct about the limit: emotional support, therapy, comfort, and companion animals “provide comfort just by being with a person. Because they have not been trained to perform a specific job or task, they do not qualify as service animals under the ADA.”[1] Some state or local laws allow ESAs in more places, so check yours.
When does an emotional support dog become a service dog?
When it is trained to perform a specific task in response to your disability, not just when it makes you feel better. The Justice Department gives the clearest example: if a dog “has been trained to sense that an anxiety attack is about to happen and take a specific action to help avoid the attack or lessen its impact, that would qualify as a service animal. However, if the dog’s mere presence provides comfort, that would not be considered a service animal under the ADA.”[1]
Since HUD’s May 2026 memo, that line matters at home too. HUD will “find reasonable cause and recommend charges only for those cases involving animals trained to provide disability-related assistance.”[4] See ESA housing rights in 2026.
How do ESAs and service dogs fly?
Service dogs fly in the cabin under the Air Carrier Access Act; emotional support animals fly as pets under each airline’s pet policy. DOT’s rule says “Animal species other than dogs, emotional support animals, comfort animals, companionship animals, and service animals in training are not service animals for the purposes of this part.”[3] Airlines may require DOT’s service animal forms for service dogs.
Can you call your emotional support animal a service dog?
No. Presenting an untrained pet as a service dog is illegal in many states and undermines handlers who rely on trained dogs. In California, misrepresenting a dog as a guide, signal, or service dog is a misdemeanor under Penal Code §365.7, and clinicians writing ESA documentation there must warn clients about it.[5] Vests and online certificates don’t change an animal’s status; see is registration real? If you need public access, the honest path is a trained psychiatric service dog.
Frequently asked questions about ESAs and service dogs
Is an emotional support dog a service dog?
No. A service dog is individually trained to perform tasks for a disability. An emotional support dog provides comfort without task training, and the Justice Department says emotional support animals do not qualify as service animals under the ADA.
Can an emotional support animal go into stores?
Not as a right. The ADA covers trained service dogs only, so stores and restaurants can refuse an emotional support animal. Some state or local laws allow more, and pet-friendly businesses may welcome it as a pet.
Which is better for anxiety, an ESA or a service dog?
It depends on whether you need trained tasks. If companionship helps, an ESA may be enough. If you need a dog to interrupt panic attacks or perform other specific tasks, a psychiatric service dog is the right category. Talk with your clinician.
Is a therapy dog the same as a service dog?
No. A therapy dog visits hospitals, schools, and similar places to comfort other people. It has no public-access or housing rights of its own. A service dog works for one handler with a disability.
Do service dogs need a vest or certification?
No. The ADA does not require a vest, ID tag, or certification, and businesses cannot demand training documentation. Airlines may require DOT’s own service animal forms.
Sources
We checked every quotation on this page against the source listed here. Laws and agency guidance change; dates show when each source was accessed or issued.
- U.S. Department of Justice, “Frequently Asked Questions about Service Animals and the ADA” (Q3–Q5, Q8, Q17). Accessed Oct. 7, 2026.
- U.S. Department of Justice, “ADA Requirements: Service Animals”. Accessed Oct. 7, 2026.
- U.S. Department of Transportation, “Traveling by Air With Service Animals,” 85 Fed. Reg. 79742 (Dec. 10, 2020); 14 CFR 382.3. Federal Register.
- HUD Office of Fair Housing and Equal Opportunity, enforcement guidance on animal accommodations (May 22, 2026). PDF on hud.gov.
- California Board of Behavioral Sciences, AB 468 FAQ (Penal Code §365.7).