Is That Really a Service Dog? Vests, Laws and What Actually Counts
A vest does not make a service dog. Training does. Here is the difference between service dogs and ESAs.

You have probably seen a dog in a vest at the grocery store and wondered. The truth is that the vest is not what matters. Here is a plain-English breakdown of how service dogs and emotional support animals differ in the U.S.
Service dogs
- Under the ADA, a service animal is a dog trained to perform specific tasks for a person with a disability.
- Federal law does not require certificates, registrations, vests or ID cards.
- When it is not obvious, staff may only ask two things: is the dog needed because of a disability, and what task is it trained to do.
Emotional support animals
- ESAs do not need task training and do not have to be dogs.
- They do not get ADA public access rights, but they are covered for housing under the Fair Housing Act, usually with a letter from a licensed provider.
Signs of a trained dog
Real service dogs tend to stay calm and quiet, ignore distractions, follow their handler and walk without pulling. Quick online “certificates” muddy the waters and make life harder for people with genuine needs.
Friendly reminder: this summary is for general info only. Your own vet knows your pet best.