Should I take my little 13lb shih tzu, my 90+lb akita, or my macaw parrot as my comfort animal?

All three comfort me. lol
I know the above is a joke, but just to remind all.
There are three fundimental requirements to legally have a service dog.
#1 Be
legally disabled with a
long term,
life-limiting condition (under ADA or State law).
A
medical disabilty is not always a
legal disabilty. Pregnancy is a short-term medical disability.
#2 The dog must do a trained task that you
can not do for yourself. Comfort, licking and other affections, or making you
feel good are not ADA tasks. The dog is a tool, a medical device, as defined by the IRS. Everyone that has a service dog would gladly trade it, if it meant they could be restored to normal.
#3 The animal must be safe in public at all times. If a dog misbehaves, barks, growls, snaps, lunges or becomes a distraction or threat to staff, clients, visitors or the public the businesses has the right and responsibility to eject the animal. This includes eating in a restaurant or using the bathroom in the wrong place. (Under the ADA the handler may return without the dog to continue their original business.)
These are core requirements under the ADA, and a federal judge has the authority to demand proof of each. Owner trainers need to keep records of their training, since it's very hard to prove number two without it.
www servicedogsfl org /docs/service_dog_binder_training_records.shtml
The reason so many dogs wash out of programs is usually #3, aggression issues are the number one defect. We spend over a year training #3 before we even start on tasks, #2.
BTW: We train our dogs for large crowds at Magic Kingdom and Epcot about 3-4 times a year as well as hold their graduation there. And when we go, we bring a crowd with about 10 dogs. Dogs come in all shapes and sizes, but training and behaviour is key.
Ken Lyons
Trainer / AKC CGC Evaluator
Service Dogs of Florida