I am planning on hopefully going back to school for occupational therapy soon but I am also interested in real estate.

it will be interesting to see how popular 'therapy' animals become, perhaps as popular as 'medical' mari-J already is here in CA?

It could be pressure therapy, head support for those with narcolepsy, one of them could sense low blood sugar in diabetics and the other could sense seizures, there's a number of things. 

The terms service animal, assistance animal, emotional support animal, therapy animal, companion animal and/or comfort animal are often cited.

but then her partner said in an anxious whisper that was clearly audible on the phone, "say that they are therapy dogs!"

Having Pet policies instead of Animal policies in this age of ESAs and comfort/therapy animals. 

They will typically wear specific harnesses which clearly state they are service animals when out in public.A support dog/therapy dog/emotional support animal is a companion animal that provides therapeutic benefits to a person with a medically diagnosed disability.

If you only raise it to $425 with a pet deposit, watch how fast the pets 'disappear' and you have to prove they are there or they quickly become therapy pets. 

In California, you cannot require a pet deposit for a service or therapy animal.

Pet deposit is legal as long as the applicant doesn't claim it to be a service or therapy animal.