Desperately in Need!!!

So, we aren't sure what happened, but our dear cat, Nibbler, has managed to injure himself rather badly.

There's been a stray cat around the complex for a while. The local animal control refuses to come out to catch it, citing that there are too many pets currently in their shelter, so they'll just capture him, neuter him, and release him back out here... Which won't help things at all.

About 4 days ago, Nibbler and this cat got into a fight on our porch (2nd floor balcony - the damned stray climbed up the bush next to it and decided to invite himself in). We don't know what exactly happened, as we were asleep - a neighbor alerted us to the fight after it happened.

All we know now is that he started favoring his right front paw. Then it moved to his back right paw. Now he's favoring both front and back, though the right front is worse, and the pain seems to be moving toward his ribs, too.

We cannot find a hot spot, a puffy area, or any outward sign of infection. All we know is that he's very much in pain, and we cannot afford to take him to the vet at this point.

Fred is out of work currently, and I'm due to lose my job in a week. We desperately need any help possible to assist us in making our dear kitty better.

If anyone out there is able to spare anything at all, or has animal veterinary training and is able to look at him, please let us know asap. It breaks our hearts to watch him struggle to even walk.

Thank you for anything you can give.

~M