My first and dearest ratty is Eris. She is well over 3 years old. I am struggling with the decision to put her to sleep.She has really advanced hind leg weakness; her back legs are next to completely paralyzed. Her abdomen is swollen, and she has a really unpleasant looking abscess. She sleeps almost all day and eats very little. All that is the bad. But she still recognizes me, comes when her name is called, and goes exploring (very slowly). She can't groom herself so I've been doing my best. She's returning the favor right now. Eris is my little buddy and we do everything together, even go to class (with permission. One of my profs refers to her as a 'charming little lady). I really don't want to be without her but i don't want to hold her here if she's suffering. She doesn't seem like she's in pain, but rats are well known for hiding their pain. How do I know when I should let go?