<human>: Can you condense the text into three sentences or less?

They don't allow their cat to come inside, but they also refuse to get her fixed, shots, anything. They only put dog food out for her to eat. She's already had three litters in the past few months. She's become skinny and it seems she's getting weaker. My mom and I have put food out for her for her sake and the kittens', but we can't afford to keep feeding all of these cats running around the neighborhood. The newest litter is only four weeks old, and the mom is pregnant again. 

My first idea was to take them to the humane society. I wasn't even going to tell my neighbors (not that they'd even notice), but our shelter isn't accepting anymore animals. I'm trying to avoid calling animal control because I know they may end up getting put down. There aren't many other options in my town. Plus, there are too many kittens to keep finding homes for.

I'm sorry for the rant, but I was wondering if anyone has advice of what we should do. The mother is getting weaker and weaker with each litter, and it's so hard to see this continue. Any advice will be appreciated.
<bot>: neighbors' outside mother cat has been pregnant four times in the last year. They refuse to get her fixed and she and the kittens can barely survive. Shelters are full and there are too many to find homes for. Any advice?