Hi. First of all, you need to be clear on your terms. A therapy dog has no public access, only special visiting privileges..say to a nursing home, or hospital. An ESA is an emotional service animal, often a pet, who makes his handler "feel better." A PSD..or psychiatric service dog is prescribed by a therapist/psychologist to mitigate a defined disability. You may qualify if your panic attacks are debilitating enough to impact your daily life.
You need to really examine Ontario law..as every province is different.
I suggest you repost this in the main forums in the Service & Therapy Dogs Forum. There are many helpful folk there who can answer all your questions.

Wiley answered on 12/23/12. Helpful? / 1