Emotional support animals, comfort animals, and therapy dogs are not service animals under Title II and Title III of the ADA. 

"Different animals" I like what you did there.Not to argue, but PTSD is a psychiatric disorder and there are several organizations training PTSD service animals.

A pet doesn't need to be a trained service animal, many are therapy/companion animals.

I then bought the building that I have my therapy practice in in 2014.  

The most recent tenants (a behavioral therapy group) moved out last week for a larger location.

If it might affect your sanity, simply use some of your savings for therapy.  

Ironically when this tenant initially prospectively viewed house it was day after my altercation and she was rather freaked out about her little therapy lapdog possibly being attacked in the future while walking or in my fenced rental.There must have been over a dozen potential tenants that saw my requirement of no “dangerous breeds as list by insurance industry”, and asked anyway. 

Closest thing I can think of is when they inject retroviruses to alter genetic code, they call it gene therapy.

My wife used to do group therapy with felons coming out of prison.

Medicaid now only pays for services, like caseworker support, therapy, maybe transportation, etc.