K&L, Chuck has lots of rescue experience and very good instincts about how to save a cat. I don't, but here is my story.

I didn't know what to think about the next-door neighbors' sweet, friendly cat George with his dull fur. I fed him treats and gravy from the Nutro canned cat food I was feeding my kitties. Then I learned that my naighbors had been giving him daily insulin injections for the two years since he developed diabetes.

My neighbors are very good and friendly people, and so are their cats. They welcomed my making friends with Bob and George, and didn't seem to mind my giving them the occasional treat. I began to understand how ravaging diabetes is to a cat, from observing the effect on George's body. George loved people and would come out in the summertime when people were around.

I can't remember whether George wore a collar or not. He never ventured too far from his back fence.

The point of my story is to recommend you talk to the humans where the cat is "hanging out" to learn something about him. Most of my neighbors encouraged my friendship with their kitties and had no objection to my giving them some treats. They may be treating the cat's health condition, or not.

Best of luck!