There is a rumor going around that if your dr prescribes a pet for your health- companion animal, that landlords can not refuse.
I hope it is true.
When I was my least active, fostering the mother cat and kittens got me going through some of my most painful days. Did not take away the pain but a distraction.

As simple as sitting and watching the antics of kittens did create a smile.
My own cats, most of the time treat me as heated furniture, but my one will not leave me alone when I am really low or stressed.

In Calgary, Canada it is very difficult to find any landlord that allows pets, even in senior independant apartments. Who would benefit greatly for having another purpose.

I have my two cat's and 4 foster cats, the most at one time was 10, (6 kittens)