I think it’s more about what you can give to the residents.
Yes @SpatzieLover , attention, conversation, a little kindness and help and something to look forward to in such a controlled and confining environment. I used to take my dog with me when I visited my grandmother years ago and all the residents just loved having a pet around.
My new cat “Myles” would be a purr-fect service cat, he is mellow, gentle and a monster lap warmer.
I may look into doing some volunteering with him at some point.
I know for me in my advanced age someday I would be thrilled to have someone bring in their pet for a little visit, I can;t imagine not being able to have a pet anymore and that would make my day! :-)