Animals are very intuitive,when I am having a bad pain day my female doxie knows, she is my heating pad. Also I had a foster that was a breeder for a puppy mill. He was a mess when he came to me. He is a little gentleman now. I kept him ( couldn't let him go) They somehow know you saved them and before long with positive reinforcement they come anound.

I am sure that given your limitations they can place a needy fur kid with you that is not a problem. There are lots of family pets that are being given up that have been part of a family for years and are thrown away. They are frightned and confused and just want a "normal" quite home to stay in. One of these little ones would be a perfect match for you.