Okay.. this is long before it actually gets to the problem. so one day I found an injured cat, fell in love with him, brought him, took him to the vet.. got his injury taken care of, and got him fixed. I kept him in for a bit longer.. but when his injury healed, I decided he could go back outside. (where he absolutely loves it) He owns me now.. and stays in my yard. I started putting food out for him, and it wasn't long when another cat came in our yard and started eating. He was absolutely gorgeous.. and such a sweet heart.. well... now he pretty much stays in our yard.. so I put food out everyday.. well over the next few months.. we've had like 7 different cats coming to eat.. which isn't a problem.. because they aren't mean to each other. I know it's spring and the breeding will start soon. We are going to take our 2nd cat and have him fixed.. because we love him.. and feel its our responsibility since we pretty much claim him as ours.. so that he wont breed with the females. We would love to bring them in.. but we have 2 inside cats (that have been all of their lives), and 2 dogs. Our inside animals have their vaccines.. but we just can't afford vaccines for the 2 outside cats that we claim as ours. Plus.. when we bring them in.. they are always just trying to get back outside because they are scared I guess.. Okay.. now for the problem. There is one cat in particular.. that comes by to eat. Her whole butt and tail is soiled with diarrhea.. shes been like that for a while.. 2 mnths atleast. I feel awful for her! But.. like I said I can't afford to take her to the vet.. shes not mine.. and I can barely afford the things my inside animals need. What can be wrong with her? And what can I do to help her that doesn't involve spending money?