We thought he was a gonner but the cat came back...

Anyone remember this song? About a week ago, I was out working in the yard with my mom and I found this little yellow cat limping around. It looked pretty sick, so I convinced Joe to let it stay the night with us. So we fixed up a little box on the porch for the friendly little guy, and gave him some food and water; he ate like he hadn't seen food for a while. He slept the whole night on the back porch and the plan was to take him to the vet in the morning. Well, by the time I got up that morning he was gone and we didn't see him at all last week. I kept hoping he wasn't laying in a ditch somewhere dying. I finally gave up hoping he would come back a few days ago. Then last night he was out in the yard when I got home from work. I was able to get a good look at his leg, the back is all shaved, so I think maybe someone took him to vet, and he's not limping anymore. I still don't think he belongs to anyone though, we fed him some canned fish last night and again, he seemed to be starving and his coat is kind of grungy. Every time he came on the porch yesterday he seemed kind of scared, so after he ate, he ran off again. So I guess I'll just wait and see if he comes back again...