Im in the same boat here. There is a long haired male cat that got injured a few months ago. I saw him sitting at the edge of the blackberries with deep cuts and blood all over. Looked like a larger animal chewed on him. Before you could not get close to him. Now he shows up at my door trying to get in. Even let my dogs walk right by him. He has scars all over his head and face. Looks like he might have an infection on one wound under his chin. I have left over meds from my cat when he had an infection. I feed him some. Thats all I can do for him. The shelter here dont want to take in the strays that never gets adopted. Because they cant even rehome the tame ones.